cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A161909 Inverse binomial transform of A181586.

Original entry on oeis.org

0, 0, 1, -3, 7, -13, 23, -41, 79, -161, 335, -689, 1391, -2769, 5487, -10897, 21743, -43537, 87279, -174865, 349935, -699665, 1398511, -2795793, 5590767, -11182353, 22367983, -44740881, 89485039, -178966801, 357920495, -715821329, 1431629551, -2863272209, 5726596847
Offset: 0

Views

Author

Paul Curtz, Jan 31 2011

Keywords

Comments

A181586(n) and successive differences:
0, 0, 1, 0, 1, 2,
0, 1, -1, 1, 1, 3,
1, -2, 2, 0, 2, 0,
-3, 4, -2, 2, -2, 6,
7, -6, 4, -4, 8, -4,
-13, 10, -8, 12, -12, 12.
First column is a(n).

Links

Formula

a(n+2)=( (2*a(n)+A077950(n)) signed)
a(n)-a(n-1) = (-1)^n*A000749(n+2).
G.f. -x^2 / ( (x-1)*(2*x+1)*(2*x^2+2*x+1) ). - R. J. Mathar, Feb 06 2011
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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