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.

A180147 Eight rooks and one berserker on a 3 X 3 chessboard. G.f.: (1 + 3*x)/(1 - 4*x - 3*x^2 + 6*x^3).

Table of values

n a(n)
0 1
1 7
2 31
3 139
4 607
5 2659
6 11623
7 50827
8 222223
9 971635
10 4248247
11 18574555
12 81213151
13 355086787
14 1552539271
15 6788138539
16 29679651247
17 129767784979
18 567381262423
19 2480750497147
20 10846539065983
21 47424120180835

List of values

[1, 7, 31, 139, 607, 2659, 11623, 50827, 222223, 971635, 4248247, 18574555, 81213151, 355086787, 1552539271, 6788138539, 29679651247, 129767784979, 567381262423, 2480750497147, 10846539065983, 47424120180835]

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

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