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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.

A156529 Triangle, T(n, k) = A008517(n+1, k+1)*A008517(n+1, n-k+1), read by rows.

Table of values

n a(n)
0 1
1 2
2 2
3 6
4 64
5 6
6 24
7 1276
8 1276
9 24
10 120
11 23088
12 107584
13 23088
14 120
15 720
16 422712
17 6388800
18 6388800
19 422712
20 720
21 5040
22 8156160
23 326165400
24 1031694400
25 326165400
26 8156160
27 5040
28 40320
29 168521184
30 15666814800
31 126099116000
32 126099116000
33 15666814800
34 168521184
35 40320

List of values

[1, 2, 2, 6, 64, 6, 24, 1276, 1276, 24, 120, 23088, 107584, 23088, 120, 720, 422712, 6388800, 6388800, 422712, 720, 5040, 8156160, 326165400, 1031694400, 326165400, 8156160, 5040, 40320, 168521184, 15666814800, 126099116000, 126099116000, 15666814800, 168521184, 40320]

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

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