A318815 - cp's OEIS frontend

A318815 Number of triples of set partitions of {1,2,...,n} whose join is {{1,2,...,n}}.

n	a(n)
1	1
2	7
3	103
4	2773
5	117697
6	7167619
7	590978941
8	63385879261
9	8584707943381
10	1434654097736101
11	290409845948305321
12	70125579500764771585
13	19940633217840575968969
14	6603748351832744611210549
15	2522614472277243822293033719
16	1102166886808604068546379343289

[1, 7, 103, 2773, 117697, 7167619, 590978941, 63385879261, 8584707943381, 1434654097736101, 290409845948305321, 70125579500764771585, 19940633217840575968969, 6603748351832744611210549, 2522614472277243822293033719, 1102166886808604068546379343289]

cp's OEIS Frontend

A318815 Number of triples of set partitions of {1,2,...,n} whose join is {{1,2,...,n}}.

Table of values

List of values