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.

A272105 Number of set partitions of [n] such that for each pair of blocks (b,c) with b at least one pair of consecutive numbers (i,i+1) exists with i member of b and i+1 member of c.

Table of values

n a(n)
0 1
1 1
2 2
3 4
4 8
5 17
6 41
7 115
8 362
9 1208
10 4112
11 14107
12 49187
13 178049

List of values

[1, 1, 2, 4, 8, 17, 41, 115, 362, 1208, 4112, 14107, 49187, 178049]

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

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