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.

A346188 a(1) = 1; a(n+1) = Sum_{d|n} binomial(n,d) * a(n/d).

Table of values

n a(n)
1 1
2 1
3 3
4 10
5 47
6 236
7 1482
8 10375
9 83351
10 750412
11 7506488
12 82571369
13 990876614
14 12881395983
15 180339682057
16 2705095261250
17 43281525456071
18 735785932753208
19 13244146802607336
20 251638789249539385
21 5032775785133933492
22 105688291487814923233
23 2325142412733663015287

List of values

[1, 1, 3, 10, 47, 236, 1482, 10375, 83351, 750412, 7506488, 82571369, 990876614, 12881395983, 180339682057, 2705095261250, 43281525456071, 735785932753208, 13244146802607336, 251638789249539385, 5032775785133933492, 105688291487814923233, 2325142412733663015287]

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

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