A195338 a(n) = A091137(n) / A016116(n).

1, 2, 6, 12, 180, 360, 7560, 15120, 226800, 453600, 14968800, 29937600, 40864824000, 81729648000

Offset: 0

Author

Paul Curtz, Sep 16 2011

Keywords

• nonn

Programs

Mathematica

a[n_] := (For[primePi = 1; p = 2; m = 1, p <= n + 1, primePi++, p = Prime[primePi]; m = m*p^Quotient[n, p - 1]]; m/2^Floor[n/2]); Table[a[n], {n, 0, 13}] (* Jean-François Alcover, Oct 02 2012 *)