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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.

A195806 Number of triangular of a 5 X 5 X 5 0..n arrays with all rows and diagonals having the same length having the same sum, with corners zero.

Table of values

n a(n)
1 16
2 105
3 496
4 1759
5 5052
6 12469
7 27412
8 55059
9 102952
10 181543
11 304908
12 491563
13 765184
14 1155567
15 1699684
16 2442553
17 3438468
18 4752283
19 6460432
20 8652429
21 11432392
22 14920189
23 19253232
24 24588229
25 31102456
26 38995845
27 48492976
28 59844451
29 73329300

List of values

[16, 105, 496, 1759, 5052, 12469, 27412, 55059, 102952, 181543, 304908, 491563, 765184, 1155567, 1699684, 2442553, 3438468, 4752283, 6460432, 8652429, 11432392, 14920189, 19253232, 24588229, 31102456, 38995845, 48492976, 59844451, 73329300]

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

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