A321633 - cp's OEIS frontend

A321633 Number of permutations of the multiset {1,1,1,1,2,2,2,2,3,3,3,3,...,n,n,n,n} with no two consecutive terms equal.

n	a(n)
0	1
1	0
2	2
3	1092
4	2265024
5	11804626080
6	131402141197200
7	2778291737177034960
8	102284730928300590754560
9	6134232798447803932455457920
10	568598490353320413296928514444800
11	78076149156802562231395694989534464000
12	15336188146163145199585928509793662920345600

[1, 0, 2, 1092, 2265024, 11804626080, 131402141197200, 2778291737177034960, 102284730928300590754560, 6134232798447803932455457920, 568598490353320413296928514444800, 78076149156802562231395694989534464000, 15336188146163145199585928509793662920345600]

cp's OEIS Frontend

A321633 Number of permutations of the multiset {1,1,1,1,2,2,2,2,3,3,3,3,...,n,n,n,n} with no two consecutive terms equal.

Table of values

List of values