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.

A099100 a(n) = Fibonacci(5*n+1).

Original entry on oeis.org

1, 8, 89, 987, 10946, 121393, 1346269, 14930352, 165580141, 1836311903, 20365011074, 225851433717, 2504730781961, 27777890035288, 308061521170129, 3416454622906707, 37889062373143906, 420196140727489673, 4660046610375530309, 51680708854858323072, 573147844013817084101, 6356306993006846248183
Offset: 0

Views

Author

Paul Barry, Sep 29 2004

Keywords

Crossrefs

Programs

Formula

G.f.: (1 - 3*x)/(1 - 11*x - x^2);
a(n) = 11*a(n-1) + a(n-2). [corrected by Philippe Deléham, Nov 16 2008]
a(n) = Sum_{k=0..5*n} binomial(k, 5*n-k).
2*a(n) = Fibonacci(5*n) + Lucas(5*n). - Bruno Berselli, Oct 13 2017