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.

A276896 Number of ordered set partitions of [n] such that for each block b the smallest integer interval containing b has at most six elements.

Table of values

n a(n)
0 1
1 1
2 3
3 13
4 75
5 541
6 4683
7 42610
8 417464
9 4438936
10 51245936
11 640642456
12 8640223604
13 124868055888
14 1924066147008
15 31484641736040
16 545300469146760
17 9967163998036554
18 191772882094520910
19 3874791064947232008
20 82035921068376624096
21 1816274191193756670912

List of values

[1, 1, 3, 13, 75, 541, 4683, 42610, 417464, 4438936, 51245936, 640642456, 8640223604, 124868055888, 1924066147008, 31484641736040, 545300469146760, 9967163998036554, 191772882094520910, 3874791064947232008, 82035921068376624096, 1816274191193756670912]

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

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