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.

A322876 Number of set partitions of [n] such that the maximal absolute difference between the least elements of consecutive blocks equals three.

Table of values

n a(n)
3 0
4 1
5 7
6 39
7 209
8 1123
9 6153
10 34723
11 202852
12 1229672
13 7742792
14 50653678
15 344195782
16 2427812876
17 17761759538
18 134650690097
19 1056676856777
20 8574943334545
21 71881479393513
22 621792661601615
23 5544644720281979
24 50918125911279963
25 481093310682127190

List of values

[0, 1, 7, 39, 209, 1123, 6153, 34723, 202852, 1229672, 7742792, 50653678, 344195782, 2427812876, 17761759538, 134650690097, 1056676856777, 8574943334545, 71881479393513, 621792661601615, 5544644720281979, 50918125911279963, 481093310682127190]

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

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