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.

A291815 G.f. A(x) satisfies: A(x - 4*x*A(x)) = x - 3*x*A(x).

Table of values

n a(n)
1 1
2 1
3 9
4 109
5 1569
6 25481
7 454105
8 8730373
9 178996865
10 3881556561
11 88477557289
12 2109927671453
13 52443846331297
14 1354646602217945
15 36275862587452281
16 1005099719255707829
17 28765965099599741953
18 849204340574458575777
19 25827102287376124267593
20 808349897942417046805197
21 26011340193853765710238241
22 859773626049480606121078057
23 29168437337569276216572259097

List of values

[1, 1, 9, 109, 1569, 25481, 454105, 8730373, 178996865, 3881556561, 88477557289, 2109927671453, 52443846331297, 1354646602217945, 36275862587452281, 1005099719255707829, 28765965099599741953, 849204340574458575777, 25827102287376124267593, 808349897942417046805197, 26011340193853765710238241, 859773626049480606121078057, 29168437337569276216572259097]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.