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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.

A243419 Number of Dyck paths of semilength n having exactly 7 (possibly overlapping) occurrences of the consecutive steps UDUUDU (with U=(1,1), D=(1,-1)).

Table of values

n a(n)
16 1
17 17
18 184
19 1589
20 11802
21 78666
22 484163
23 2806039
24 15527186
25 82851064
26 429392845
27 2173167944
28 10783733773
29 52629404231
30 253233665755
31 1203597734972
32 5659518993517
33 26361150741197
34 121755788054172
35 558129404726455
36 2541096189931118
37 11497990460196322

List of values

[1, 17, 184, 1589, 11802, 78666, 484163, 2806039, 15527186, 82851064, 429392845, 2173167944, 10783733773, 52629404231, 253233665755, 1203597734972, 5659518993517, 26361150741197, 121755788054172, 558129404726455, 2541096189931118, 11497990460196322]

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

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