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.

A320559 Number of set partitions of [n] such that for each block b the smallest integer interval containing b has at most nine elements and for at least one block c the smallest integer interval containing c has exactly nine elements.

Table of values

n a(n)
9 4140
10 30751
11 158766
12 705926
13 2928164
14 11774145
15 46852653
16 186723275
17 759062433
18 3170429794
19 13343960839
20 56013146481
21 233387096649
22 963938933894
23 3948441860748
24 16062919807404
25 65036845178255
26 262641546675463
27 1059920408695467
28 4277149345637299

List of values

[4140, 30751, 158766, 705926, 2928164, 11774145, 46852653, 186723275, 759062433, 3170429794, 13343960839, 56013146481, 233387096649, 963938933894, 3948441860748, 16062919807404, 65036845178255, 262641546675463, 1059920408695467, 4277149345637299]