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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.

A238323 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no element greater than all horizontal neighbors or less than all vertical neighbors.

Table of values

n a(n)
1 3
2 9
3 9
4 22
5 67
6 22
7 51
8 376
9 376
10 51
11 121
12 1867
13 4294
14 1867
15 121
16 292
17 9489
18 41046
19 41046
20 9489
21 292
22 704
23 50232
24 405636
25 721939
26 405636
27 50232
28 704
29 1691
30 267174
31 4245918
32 13265123
33 13265123
34 4245918
35 267174
36 1691
37 4059
38 1408341
39 44773061

List of values

[3, 9, 9, 22, 67, 22, 51, 376, 376, 51, 121, 1867, 4294, 1867, 121, 292, 9489, 41046, 41046, 9489, 292, 704, 50232, 405636, 721939, 405636, 50232, 704, 1691, 267174, 4245918, 13265123, 13265123, 4245918, 267174, 1691, 4059, 1408341, 44773061]

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

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