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.

A232951 Number of n X 4 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, diagonally or antidiagonally, and top left element zero.

Table of values

n a(n)
1 27
2 771
3 22971
4 685251
5 20442651
6 609853251
7 18193384251
8 542752261251
9 16191600916251
10 483034266181251
11 14410069980856251
12 429886928094781251
13 12824557492939156251
14 382587290147700781251
15 11413495916966327656251

List of values

[27, 771, 22971, 685251, 20442651, 609853251, 18193384251, 542752261251, 16191600916251, 483034266181251, 14410069980856251, 429886928094781251, 12824557492939156251, 382587290147700781251, 11413495916966327656251]

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

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