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.

A196476 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,3,2,1 for x=0,1,2,3,4.

Table of values

n a(n)
1 17
2 43
3 42
4 305
5 2351
6 38826
7 299659
8 1231691
9 5238322
10 26129353
11 141788701
12 1086218484
13 7344638998
14 38637965991
15 209973350431
16 1159411392373
17 6436583617125
18 39481503993996
19 240320932969724
20 1381481638118489

List of values

[17, 43, 42, 305, 2351, 38826, 299659, 1231691, 5238322, 26129353, 141788701, 1086218484, 7344638998, 38637965991, 209973350431, 1159411392373, 6436583617125, 39481503993996, 240320932969724, 1381481638118489]

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

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