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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.

A280858 Number of nX7 0..2 arrays with no element equal to more than one of its king-move neighbors and with new values introduced in order 0 sequentially upwards.

Table of values

n a(n)
1 224
2 6596
3 1698
4 1005
5 968
6 1202
7 1738
8 2877
9 5244
10 9569
11 15872
12 24653
13 36954
14 55077
15 83190
16 128817
17 204084
18 326793
19 522262
20 828099
21 1300592
22 2029441
23 3159306
24 4927841
25 7712840
26 12114811
27 19061740
28 29999825
29 47157384
30 74031085
31 116080358

List of values

[224, 6596, 1698, 1005, 968, 1202, 1738, 2877, 5244, 9569, 15872, 24653, 36954, 55077, 83190, 128817, 204084, 326793, 522262, 828099, 1300592, 2029441, 3159306, 4927841, 7712840, 12114811, 19061740, 29999825, 47157384, 74031085, 116080358]

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

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