A321666 - cp's OEIS frontend

A321666 Number of arrangements of n 1's, n 2's, ..., n n's avoiding equal consecutive terms and introduced in ascending order.

n	a(n)
0	1
1	1
2	1
3	29
4	94376
5	66218360625
6	16985819072511102549
7	2421032324142610480402567434373
8	271259741131895052775392614041761701799270286
9	32119646666355552112999645991677870426882424139287301894021793

[1, 1, 1, 29, 94376, 66218360625, 16985819072511102549, 2421032324142610480402567434373, 271259741131895052775392614041761701799270286, 32119646666355552112999645991677870426882424139287301894021793]

cp's OEIS Frontend

A321666 Number of arrangements of n 1's, n 2's, ..., n n's avoiding equal consecutive terms and introduced in ascending order.

Table of values

List of values