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.

A180145 Eight rooks and one berserker on a 3 X 3 chessboard. G.f.: (1 - 3*x^2)/(1 - 4*x - 3*x^2 + 6*x^3).

Table of values

n a(n)
0 1
1 4
2 16
3 70
4 304
5 1330
6 5812
7 25414
8 111112
9 485818
10 2124124
11 9287278
12 40606576
13 177543394
14 776269636
15 3394069270
16 14839825624
17 64883892490
18 283690631212
19 1240375248574
20 5423269532992
21 23712060090418
22 103675797469204

List of values

[1, 4, 16, 70, 304, 1330, 5812, 25414, 111112, 485818, 2124124, 9287278, 40606576, 177543394, 776269636, 3394069270, 14839825624, 64883892490, 283690631212, 1240375248574, 5423269532992, 23712060090418, 103675797469204]