A128131 a(n) = 2^A000096(n)*A128130(n).

1, -4, 0, 0, -16384, 1048576, 0, 0, 17592186044416, -18014398509481984, 0, 0, -1237940039285380274899124224, 20282409603651670423947251286016, 0, 0, 5708990770823839524233143877797980545530986496

Offset: 0

Author

Paul Barry, Feb 15 2007

Keywords

• easy
• sign

Crossrefs

Cf. A036442, A127945.

Programs

Maple

A128131 := proc(n)
    2^(n*(n+3)/2)*A128130(n) ;
end proc: # R. J. Mathar, Feb 24 2015

Formula

a(n) = 2^n * 2^C(n+1,2) * A128130(n);

Extensions

Incorrect NAME removed. - R. J. Mathar, Feb 24 2015