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.

Showing 1-2 of 2 results.

A083300 a(n) = (4*7^n + (-3)^n)/5.

Original entry on oeis.org

1, 5, 41, 269, 1937, 13397, 94265, 658397, 4613153, 32278949, 225992009, 1581825965, 11073136049, 77510889461, 542579414873, 3798046338173, 26586353065025, 186104385361733, 1302730955812457, 9119115915846221
Offset: 0

Views

Author

Paul Barry, Apr 24 2003

Keywords

Comments

Binomial transform of A083299.

Crossrefs

Cf. A083301.

Programs

Formula

a(n) = (4*7^n + (-3)^n)/5.
G.f.: (1+x)/((1-7*x)*(1+3*x)).
E.g.f.: (4*exp(7*x) + exp(-3*x))/5.

A083302 a(n) = (4*9^n + (-1)^n)/5.

Original entry on oeis.org

1, 7, 65, 583, 5249, 47239, 425153, 3826375, 34437377, 309936391, 2789427521, 25104847687, 225943629185, 2033492662663, 18301433963969, 164712905675719, 1482416151081473, 13341745359733255, 120075708237599297
Offset: 0

Views

Author

Paul Barry, Apr 24 2003

Keywords

Comments

Binomial transform of A083301.

Programs

Formula

G.f.: (1-x)/((1-*9x)(1+x)).
E.g.f.: (4*exp(9*x) + exp(-x))/5.
Showing 1-2 of 2 results.