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.

A208641 Number of 6 X n 0..1 arrays with new values 0..1 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors.

Table of values

n a(n)
1 32
2 233
3 851
4 2331
5 5572
6 12404
7 26508
8 55260
9 113427
10 230559
11 465773
12 937321
13 1881726
14 3772054
15 7554458
16 15121266
17 30257157
18 60531513
19 121083123
20 242189591
21 484406152
22 968843304
23 1937722072
24 3875484536
25 7751014887
26 15502081539

List of values

[32, 233, 851, 2331, 5572, 12404, 26508, 55260, 113427, 230559, 465773, 937321, 1881726, 3772054, 7554458, 15121266, 30257157, 60531513, 121083123, 242189591, 484406152, 968843304, 1937722072, 3875484536, 7751014887, 15502081539]

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

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