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.

A246645 Expansion of 1/(1 - 22*x + 81*x^2), used in A246643.

Table of values

n a(n)
0 1
1 22
2 403
3 7084
4 123205
5 2136706
6 37027927
7 641541208
8 11114644489
9 192557340910
10 3335975296411
11 57794311907332
12 1001260862952013
13 17346399720450394
14 300518663950795615
15 5206352229561021616
16 90197737270328030737
17 1562635689352773925318
18 27071968446864455867299

List of values

[1, 22, 403, 7084, 123205, 2136706, 37027927, 641541208, 11114644489, 192557340910, 3335975296411, 57794311907332, 1001260862952013, 17346399720450394, 300518663950795615, 5206352229561021616, 90197737270328030737, 1562635689352773925318, 27071968446864455867299]