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.

A290167 Number of complete non-collateral matches with lattice points on the edges of an n X n square (symmetries and rotations excluded).

Table of values

n a(n)
1 1
2 5
3 121
4 9598
5 1679181
6 453504350
7 172005077014
8 86949091994273
9 56483442337203525
10 45847249692285567451
11 45469223124152747878400
12 54099446571414415140387750
13 76055371931321606140937295538
14 124721482827599093214246240617246

List of values

[1, 5, 121, 9598, 1679181, 453504350, 172005077014, 86949091994273, 56483442337203525, 45847249692285567451, 45469223124152747878400, 54099446571414415140387750, 76055371931321606140937295538, 124721482827599093214246240617246]

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

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