A130869 Partial sums of A130752.

2, 7, 16, 32, 63, 126, 254, 511, 1024, 2048, 4095, 8190, 16382, 32767, 65536, 131072, 262143, 524286, 1048574, 2097151, 4194304, 8388608, 16777215, 33554430, 67108862, 134217727, 268435456, 536870912, 1073741823, 2147483646

Offset

0,1

Links

Table of n, a(n) for n=0..29.

Formula

O.g.f.: (2-x)/[(1-x)(1-2x)(1-x+x^2)]. - R. J. Mathar, Jul 04 2008

Inverse binomial transform yields 2,(5,4,3) periodically continued with period 3. - R. J. Mathar, Jul 04 2008

a(n+1)-2a(n) = A131290(n+1). 2^(n+2)-a(n) = A131026(n+2).

Crossrefs

Sequence in context: A023550 A332232 A333395 * A212576 A208995 A023612

Adjacent sequences: A130866 A130867 A130868 * A130870 A130871 A130872

Keyword

nonn

Author

Paul Curtz, Jul 24 2007

Extensions

Edited and extended by R. J. Mathar, Jul 04 2008

Status

approved