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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.

A258177 Sum over all Dyck paths of semilength n of products over all peaks p of y_p^x_p, where x_p and y_p are the coordinates of peak p.

Table of values

n a(n)
0 1
1 1
2 5
3 112
4 15312
5 22928885
6 475971133797
7 164769697242392241
8 1674694178196441599627207
9 434453335415659344048321288040053
10 2772047111897899211702422870954450438220795
11 919691726760748842849028933552012720445531166591469510

List of values

[1, 1, 5, 112, 15312, 22928885, 475971133797, 164769697242392241, 1674694178196441599627207, 434453335415659344048321288040053, 2772047111897899211702422870954450438220795, 919691726760748842849028933552012720445531166591469510]

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

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