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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.

A288146 Number of Dyck paths of semilength n such that the number of peaks is weakly increasing from lower to higher levels and no positive level is peakless.

Table of values

n a(n)
0 1
1 1
2 1
3 3
4 3
5 13
6 28
7 65
8 199
9 540
10 1468
11 4188
12 12328
13 36870
14 110181
15 331226
16 1012241
17 3137822
18 9796834
19 30695164
20 96658857
21 306575170
22 979485119
23 3148413910
24 10169223709
25 32983822120
26 107413795300
27 351235602807
28 1153308804255
29 3802294411213
30 12581993628872

List of values

[1, 1, 1, 3, 3, 13, 28, 65, 199, 540, 1468, 4188, 12328, 36870, 110181, 331226, 1012241, 3137822, 9796834, 30695164, 96658857, 306575170, 979485119, 3148413910, 10169223709, 32983822120, 107413795300, 351235602807, 1153308804255, 3802294411213, 12581993628872]

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

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