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.

A220641 Number of ways to reciprocally link elements of an n X 5 array either to themselves or to exactly one king-move neighbor.

Table of values

n a(n)
0 1
1 8
2 728
3 37320
4 2226936
5 128171936
6 7444342896
7 431408410784
8 25014514225856
9 1450226501771584
10 84080327982982848
11 4874715696405194752
12 282621433306639435392
13 16385536749696632356608
14 949984033027704106955264
15 55077209132605857634211328

List of values

[1, 8, 728, 37320, 2226936, 128171936, 7444342896, 431408410784, 25014514225856, 1450226501771584, 84080327982982848, 4874715696405194752, 282621433306639435392, 16385536749696632356608, 949984033027704106955264, 55077209132605857634211328]

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

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