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n=12n=9 while n<2e8: n+=1 if`n`in`range(n%10,0,~n%100%11-11)`[-2::-3]:print n n+=1
Takes about 3 minutes locally.
Try it online!Try it online! (modified to print all numbers but the last)
n=12 while n<2e8: if`n`in`range(n%10,0,~n%100%11-11)`[-2::-3]:print n n+=1
Try it online! (modified to print all numbers but the last)
n=9 while n<2e8: n+=1 if`n`in`range(n%10,0,~n%100%11-11)`[-2::-3]:print n
