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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.

A208740 Number of multisets that occurring as the peak heights multiset of a Dyck n-path that are the also the peak heights multiset of a smaller Dyck path.

Table of values

n a(n)
1 0
2 0
3 0
4 1
5 4
6 13
7 34
8 83
9 189
10 415
11 885
12 1853
13 3824
14 7819
15 15876
16 32084
17 64621
18 129860
19 260547
20 522201
21 1045862
22 2093646
23 4189796
24 8382845
25 16769878
26 33545136
27 67097132
28 134202986
29 268416996
30 536847887
31 1073713195
32 2147448177
33 4294923476
34 8589880629

List of values

[0, 0, 0, 1, 4, 13, 34, 83, 189, 415, 885, 1853, 3824, 7819, 15876, 32084, 64621, 129860, 260547, 522201, 1045862, 2093646, 4189796, 8382845, 16769878, 33545136, 67097132, 134202986, 268416996, 536847887, 1073713195, 2147448177, 4294923476, 8589880629]

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

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