cp's OEIS Frontend

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.

A086607 Main diagonal of triangle A086606: the n-th term of the n-th self-convolution of the sequence formed by flattening triangle A086606.

Table of values

n a(n)
1 1
2 2
3 9
4 32
5 140
6 630
7 2870
8 13256
9 61389
10 286710
11 1346004
12 6351516
13 30088071
14 142997456
15 681498600
16 3255674016
17 15585877627
18 74752865964
19 359121640259
20 1727811098500
21 8323912135434
22 40149494252802
23 193868148499388
24 937055479499472
25 4533362484840700

List of values

[1, 2, 9, 32, 140, 630, 2870, 13256, 61389, 286710, 1346004, 6351516, 30088071, 142997456, 681498600, 3255674016, 15585877627, 74752865964, 359121640259, 1727811098500, 8323912135434, 40149494252802, 193868148499388, 937055479499472, 4533362484840700]

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

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