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.

A288540 Number of Dyck paths of semilength n such that the minimal number of peaks over all positive levels equals one.

Table of values

n a(n)
1 1
2 0
3 2
4 5
5 13
6 35
7 112
8 368
9 1208
10 3992
11 13449
12 46187
13 160804
14 565535
15 2005796
16 7168058
17 25793100
18 93388250
19 340005973
20 1244062960
21 4572478054
22 16874672868
23 62508259095
24 232338076267
25 866289458048
26 3239350667761
27 12145345634715
28 45649270140732

List of values

[1, 0, 2, 5, 13, 35, 112, 368, 1208, 3992, 13449, 46187, 160804, 565535, 2005796, 7168058, 25793100, 93388250, 340005973, 1244062960, 4572478054, 16874672868, 62508259095, 232338076267, 866289458048, 3239350667761, 12145345634715, 45649270140732]

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

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