A193638 - cp's OEIS frontend

A193638 Number of permutations of the multiset {1,1,1,2,2,2,3,3,3,...,n,n,n} with no two consecutive terms equal.

n	a(n)
0	1
1	0
2	2
3	174
4	41304
5	19606320
6	16438575600
7	22278418248240
8	45718006789687680
9	135143407245840698880
10	553269523327347306412800
11	3039044104423605600086688000
12	21819823367694505460651694873600
13	200345011881335747639978525387827200

[1, 0, 2, 174, 41304, 19606320, 16438575600, 22278418248240, 45718006789687680, 135143407245840698880, 553269523327347306412800, 3039044104423605600086688000, 21819823367694505460651694873600, 200345011881335747639978525387827200]

cp's OEIS Frontend

A193638 Number of permutations of the multiset {1,1,1,2,2,2,3,3,3,...,n,n,n} with no two consecutive terms equal.

Table of values

List of values