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.

A337564 Number of sequences of length 2*n covering an initial interval of positive integers and splitting into n maximal runs.

Table of values

n a(n)
0 1
1 1
2 6
3 80
4 1540
5 38808
6 1206744
7 44595408
8 1908389340
9 92780281880
10 5050066185736
11 304196411024688
12 20087958167374552
13 1442953024024996400
14 112007566256683719600
15 9342904053303870936480
16 833388624898522799682780
17 79159669418651567937733080

List of values

[1, 1, 6, 80, 1540, 38808, 1206744, 44595408, 1908389340, 92780281880, 5050066185736, 304196411024688, 20087958167374552, 1442953024024996400, 112007566256683719600, 9342904053303870936480, 833388624898522799682780, 79159669418651567937733080]

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

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