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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.

A243878 Number of Dyck paths of semilength n having exactly 8 (possibly overlapping) occurrences of the consecutive steps UDUUUDDDUD (with U=(1,1), D=(1,-1)).

Table of values

n a(n)
33 1
34 10
35 73
36 490
37 3127
38 19249
39 115021
40 669745
41 3812716
42 21277658
43 116666435
44 629665898
45 3350420024
46 17599292330
47 91368992279
48 469293511892
49 2386777084592
50 12029136326922
51 60118399193577
52 298121360285805
53 1467661404628893
54 7176555449003580
55 34870090954789419

List of values

[1, 10, 73, 490, 3127, 19249, 115021, 669745, 3812716, 21277658, 116666435, 629665898, 3350420024, 17599292330, 91368992279, 469293511892, 2386777084592, 12029136326922, 60118399193577, 298121360285805, 1467661404628893, 7176555449003580, 34870090954789419]

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

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