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.

A207367 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 1 vertically.

Table of values

n a(n)
1 25
2 625
3 3025
4 14641
5 45738
6 142884
7 353808
8 876096
9 1869192
10 3988009
11 7660492
12 14714896
13 26130832
14 46403344
15 77513748
16 129481641
17 205925763
18 327501409
19 500255371
20 764135449
21 1128442546
22 1666435684
23 2391271116
24 3431382084

List of values

[25, 625, 3025, 14641, 45738, 142884, 353808, 876096, 1869192, 3988009, 7660492, 14714896, 26130832, 46403344, 77513748, 129481641, 205925763, 327501409, 500255371, 764135449, 1128442546, 1666435684, 2391271116, 3431382084]

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

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