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.

A083580 Binomial transform of A083579.

Original entry on oeis.org

0, 1, 3, 10, 34, 114, 374, 1202, 3798, 11842, 36550, 111954, 340982, 1034210, 3127206, 9434866, 28419286, 85503618, 257035142, 772219538, 2319017910, 6962034466, 20896589158, 62711787570, 188181500054, 564640969154
Offset: 0

Views

Author

Paul Barry, May 01 2003

Keywords

Examples

			a(0) = 2/3-5/12-1/4 = 0 (use 0^0=1).
		

Crossrefs

Cf. A083579.

Programs

  • Mathematica
    CoefficientList[Series[x*(1 - 4*x + 5*x^2)/((1 - 2*x)^2*(1 - 3*x)), {x, 0, 30}], x] (* Wesley Ivan Hurt, Dec 28 2023 *)

Formula

a(n) = 2*3^n/3-5*0^n/12-(n+1)*2^(n-2).
G.f.: x*(1-4*x+5*x^2)/((1-2*x)^2*(1-3*x)). - Colin Barker, Apr 16 2012