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.

A269200 Number of n X 7 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three no more than once.

Table of values

n a(n)
1 8748
2 3212820
3 1184381844
4 399104835612
5 128136007344516
6 39825831571425924
7 12093315071771856492
8 3608384928930423012804
9 1062048602869077147571956
10 309185374985245150329134076
11 89206481105125372533736647588

List of values

[8748, 3212820, 1184381844, 399104835612, 128136007344516, 39825831571425924, 12093315071771856492, 3608384928930423012804, 1062048602869077147571956, 309185374985245150329134076, 89206481105125372533736647588]

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

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