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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.

A243879 Number of Dyck paths of semilength n having exactly 9 (possibly overlapping) occurrences of the consecutive steps UDUUUDDDUD (with U=(1,1), D=(1,-1)).

Table of values

n a(n)
37 1
38 11
39 86
40 611
41 4106
42 26508
43 165608
44 1005693
45 5958138
46 34538560
47 196383607
48 1097479232
49 6038391492
50 32757730552
51 175436127352
52 928559489820
53 4861821384020
54 25202877769350
55 129444778524955
56 659155791410730
57 3329785315219783
58 16695460286688023
59 83126852562101708

List of values

[1, 11, 86, 611, 4106, 26508, 165608, 1005693, 5958138, 34538560, 196383607, 1097479232, 6038391492, 32757730552, 175436127352, 928559489820, 4861821384020, 25202877769350, 129444778524955, 659155791410730, 3329785315219783, 16695460286688023, 83126852562101708]

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

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