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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.

A187645 T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with each 3X3 subblock having sum 9.

Table of values

n a(n)
1 3139
2 17701
3 17701
4 101419
5 79259
6 101419
7 596653
8 363533
9 363533
10 596653
11 3703651
12 1747075
13 1342083
14 1747075
15 3703651
16 23126677
17 9368309
18 5273797
19 5273797
20 9368309
21 23126677
22 145502251
23 51019403
24 24351579
25 17048731
26 24351579

List of values

[3139, 17701, 17701, 101419, 79259, 101419, 596653, 363533, 363533, 596653, 3703651, 1747075, 1342083, 1747075, 3703651, 23126677, 9368309, 5273797, 5273797, 9368309, 23126677, 145502251, 51019403, 24351579, 17048731, 24351579]

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

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