A137173 A006516 at positions with even indices, A007582 at positions with odd indices.

0, 1, 1, 3, 6, 10, 28, 36, 120, 136, 496, 528, 2016, 2080, 8128, 8256, 32640, 32896, 130816, 131328, 523776, 524800, 2096128, 2098176, 8386560, 8390656, 33550336, 33558528, 134209536, 134225920, 536854528, 536887296, 2147450880, 2147516416

Offset

0,4

Links

Table of n, a(n) for n=0..33.

Formula

a(2n)=A006516(n). a(2n+1)=A007582(n).

a(2n)+a(2n+1) = A000302(n). a(2n+1)-a(2n)=A000079(n).

G.f.: -x*(-1-x+3*x^2) / ( (2*x+1)*(2*x-1)*(2*x^2-1) ). - R. J. Mathar, Nov 22 2018

Crossrefs

Sequence in context: A302094 A068818 A068866 * A116544 A110891 A197435

Adjacent sequences: A137170 A137171 A137172 * A137174 A137175 A137176

Keyword

nonn,easy

Author

Paul Curtz, May 11 2008

Extensions

Edited by R. J. Mathar, Jul 16 2008

Status

approved