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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.

A243418 Number of Dyck paths of semilength n having exactly 6 (possibly overlapping) occurrences of the consecutive steps UDUUDU (with U=(1,1), D=(1,-1)).

Table of values

n a(n)
14 1
15 15
16 144
17 1115
18 7509
19 45864
20 261185
21 1412742
22 7350116
23 37106514
24 182907585
25 884290974
26 4207172844
27 19747711113
28 91627676418
29 420914259695
30 1916722429108
31 8660949017183
32 38866735108620
33 173341678278027
34 768774806179919
35 3392247359157876
36 14899045118613987

List of values

[1, 15, 144, 1115, 7509, 45864, 261185, 1412742, 7350116, 37106514, 182907585, 884290974, 4207172844, 19747711113, 91627676418, 420914259695, 1916722429108, 8660949017183, 38866735108620, 173341678278027, 768774806179919, 3392247359157876, 14899045118613987]

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

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