2 deleted 4 characters in body
source | link

Bash+coreutils, 2521 bytes

seq $1|paste -d\* -s -|bcsd\*|bc

Bash+coreutils, 25 bytes

seq $1|paste -d\* -s -|bc

Bash+coreutils, 21 bytes

seq $1|paste -sd\*|bc
1
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Bash+coreutils, 25 bytes

seq $1|paste -d\* -s -|bc