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.

A224790 a(n) = 3*9^n + 8.

Original entry on oeis.org

11, 35, 251, 2195, 19691, 177155, 1594331, 14348915, 129140171, 1162261475, 10460353211, 94143178835, 847288609451, 7625597484995, 68630377364891, 617673396283955, 5559060566555531, 50031545098999715, 450283905890997371, 4052555153018976275
Offset: 0

Views

Author

Eric M. Schmidt, Apr 18 2013

Keywords

Comments

Number of conjugacy classes in Ree group 2G2(3*9^n).

Crossrefs

Cf. A188161.

Programs

Formula

G.f.: 8/(1-x) + 3/(1-9*x).
a(n) = 10*a(n-1) - 9*a(n-2).
E.g.f.: 8*exp(x) + 3*exp(9*x). - G. C. Greubel, Nov 12 2019