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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.

A201496 T(n,k)=Number of nXk zero-sum -2..2 arrays with rows and columns lexicographically nondecreasing.

Table of values

n a(n)
1 1
2 3
3 3
4 5
5 29
6 5
7 8
8 226
9 226
10 8
11 12
12 1454
13 9331
14 1454
15 12
16 18
17 7815
18 301432
19 301432
20 7815
21 18
22 24
23 36487
24 7798656
25 50432052
26 7798656
27 36487
28 24
29 33
30 151593
31 168357815
32 6697376240
33 6697376240
34 168357815
35 151593
36 33
37 43
38 571539
39 3127432827

List of values

[1, 3, 3, 5, 29, 5, 8, 226, 226, 8, 12, 1454, 9331, 1454, 12, 18, 7815, 301432, 301432, 7815, 18, 24, 36487, 7798656, 50432052, 7798656, 36487, 24, 33, 151593, 168357815, 6697376240, 6697376240, 168357815, 151593, 33, 43, 571539, 3127432827]

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

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