cp's OEIS Frontend

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.

A274115 Number of equivalence classes of Dyck paths of semilength n for the string duu.

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 4
5 8
6 17
7 35
8 75
9 157
10 337
11 712
12 1529
13 3248
14 6976
15 14869
16 31937
17 68222
18 146536
19 313487
20 673351
21 1441999
22 3097326
23 6637879
24 14257734
25 30572032
26 65666593
27 140860379
28 302557585
29 649202036
30 1394434685
31 2992721902
32 6428118868
33 13798302512
34 29637567305
35 63626933527
36 136665012979

List of values

[1, 1, 1, 2, 4, 8, 17, 35, 75, 157, 337, 712, 1529, 3248, 6976, 14869, 31937, 68222, 146536, 313487, 673351, 1441999, 3097326, 6637879, 14257734, 30572032, 65666593, 140860379, 302557585, 649202036, 1394434685, 2992721902, 6428118868, 13798302512, 29637567305, 63626933527, 136665012979]

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

Content is available under The OEIS End-User License Agreement.