A133806 Alternate terms of A131708 and A000079.

0, 1, 1, 2, 2, 4, 3, 8, 5, 16, 10, 32, 21, 64, 43, 128, 86, 256, 171, 512, 341, 1024, 682, 2048, 1365, 4096, 2731, 8192, 5462, 16384, 10923, 32768, 21845, 65536, 43690, 131072, 87381, 262144, 174763, 524288, 349526, 1048576, 699051, 2097152

Offset

0,4

Links

Table of n, a(n) for n=0..43.

Index entries for linear recurrences with constant coefficients, signature (0,3,0,-3,0,2).

Formula

G.f.: -x*(1+x-x^2-x^3+x^4) / ( (2*x^2-1)*(x^4-x^2+1) ). - R. J. Mathar, Jul 16 2015

Crossrefs

Cf. A000079.

Sequence in context: A185959 A006799 A056429 * A360241 A283717 A185333

Adjacent sequences: A133803 A133804 A133805 * A133807 A133808 A133809

Keyword

nonn,easy

Author

Paul Curtz, Jan 06 2008

Status

approved