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.

A286896 Number of blocks of size >= n in all set partitions of [2n].

Table of values

n a(n)
0 1
1 3
2 17
3 137
4 1395
5 16955
6 237426
7 3740609
8 65197797
9 1241499241
10 25577181324
11 565688751435
12 13346516581331
13 334144326030052
14 8837737924901855
15 245998212661731213
16 7182425756528424275
17 219332432679783740235
18 6987451758608249737342
19 231704015156531645221237

List of values

[1, 3, 17, 137, 1395, 16955, 237426, 3740609, 65197797, 1241499241, 25577181324, 565688751435, 13346516581331, 334144326030052, 8837737924901855, 245998212661731213, 7182425756528424275, 219332432679783740235, 6987451758608249737342, 231704015156531645221237]

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

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