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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.

A153512 Triangle T(n,m) = (A006882(2*n + 1))^2 / ( A006882(2*m+1) * A006882(2*n-2*m+1) ).

Table of values

n a(n)
0 1
1 3
2 3
3 15
4 25
5 15
6 105
7 245
8 245
9 105
10 945
11 2835
12 3969
13 2835
14 945
15 10395
16 38115
17 68607
18 68607
19 38115
20 10395
21 135135
22 585585
23 1288287
24 1656369
25 1288287
26 585585
27 135135
28 2027025
29 10135125
30 26351325
31 41409225
32 41409225
33 26351325
34 10135125
35 2027025

List of values

[1, 3, 3, 15, 25, 15, 105, 245, 245, 105, 945, 2835, 3969, 2835, 945, 10395, 38115, 68607, 68607, 38115, 10395, 135135, 585585, 1288287, 1656369, 1288287, 585585, 135135, 2027025, 10135125, 26351325, 41409225, 41409225, 26351325, 10135125, 2027025]

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

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