# Tag Info

1 vote

### One OEIS after another

387. Cognate, 1984 bytes, A000350 ...
1 vote

1 vote

### One OEIS after another

386. Zig, 350 bytes, A000182 ...
1 vote

### Sums of Consecutive Integers

Knight, 66 bytes ;=i+=a 0P W;=r""!>=a+1=b a=c iW!>0c;=c-c=b+1b;=r+r+"+"bI?0cQ Or 0 Try it online! Annotated code: ...
1 vote

### Sums of Consecutive Integers

Prolog (SWI), 75 71 bytes L/X/H:-between(L,H,X). N*Z:-1/A/N,A/X/N,findall(Y,A/Y/X,Z),sum(Z,#=,N). Try it online! -4 bytes thanks to DLosc.

### Fibonacci function or sequence

Trianguish, 152 135 bytes ...

### Is it a semiprime?

Alice, 15 bytes /O\cdtv @I/ nt< Try it online! Flattened ...

### Can this number be written in (3^x) - 1 format?

Kotlin, 78 bytes {val x=kotlin.math.log(it+1.0,3.0);if(kotlin.math.round(x)==x)x.toInt()else-1} kotlin.math.log and ...

### Exponential transform of an integer sequence

Vyxal R, 16 bytes ṗṗ'fs¹ɾ⁼;vvLİvΠ∑ Try it Online! Port of Command Master's 05AB1E answer, upvote that!
1 vote

### Exponential transform of an integer sequence

Charcoal, 36 bytes ＦＬθ⊞υ∨¬ιΣＥυ××κ§θ⁻ιλ∨¬λ÷Π…⁻ιλιΠ…·¹λＩυ Try it online! Link is to verbose version of code. Explanation: A translation of the recurrence formula ...

### Exponential transform of an integer sequence

Haskell, 59 bytes f@(a:b)&g@(c:d)=a*c:zipWith(+)(b&g)(f&d) _&_=[] e b=1:e b&b Try it online! e accepts the ...
1 vote

### Exponential transform of an integer sequence

Python, 85 bytes import math f=lambda n,l:sum(math.comb(n-1,i)*l[i]*f(n-i-1,l)for i in range(n))+(n<1) Attempt This Online! Doesn't take the leading zero in the input. If that's not allowed, I will ...

### Exponential transform of an integer sequence

Wolfram Language (Mathematica), 37 24 bytes BellY[#,,#2]~Sum~{,0,#}& Try it online! Based on the Mathematica code given by Vladimir Reshetnikov on OEIS A256180....

### Exponential transform of an integer sequence

05AB1E, 21 20 18 16 bytes L©ææʒ˜{®Q}€€gèPO Try it online! Returns the $i$-th term, zero indexed. It runs in complexity $\Omega(2^{2^i})$, so it can only ...
1 vote

### The Squaring Sequence

cQuents, 14 bytes =1111:(ZZ)[:4] Try it online! 1-indexed. Explanation ...

### The Squaring Sequence

C++ (clang), 52 bytes void s(int&n){n=--n?s(n),n*n/1e3/(n<3163?:10):1111;} Port of Lynn's C answer using recursion, is 1 indexed and returns via out ...

### The Squaring Sequence

Vyxal, 6 5 bytes Ṫ(²4Ẏ Try it online, or verify all test cases. Explanation: ...