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A137173 A006516 at positions with even indices, A007582 at positions with odd indices. 2
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 (list; graph; refs; listen; history; text; internal format)
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: A211231 A302094 A068818 * A116544 A068866 A110891

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

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Last modified May 28 00:30 EDT 2022. Contains 354110 sequences. (Running on oeis4.)