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.

A207122 Number of n X 7 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically.

Table of values

n a(n)
1 31
2 961
3 6634
4 45796
5 186822
6 762129
7 2330037
8 7123561
9 18090482
10 45941284
11 102402024
12 228251664
13 461670264
14 933791364
15 1751615118
16 3285697041
17 5802776793
18 10248120289
19 17226819610
20 28957828900
21 46710814150
22 75347505025

List of values

[31, 961, 6634, 45796, 186822, 762129, 2330037, 7123561, 18090482, 45941284, 102402024, 228251664, 461670264, 933791364, 1751615118, 3285697041, 5802776793, 10248120289, 17226819610, 28957828900, 46710814150, 75347505025]

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

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