A124188 - cp's OEIS frontend

A124188 Number of 3-good permutations on {1,2,...,n}, i.e., permutations that contain each of the six patterns {123, 132, 213, 231, 312, 321} as a subsequence.

n	a(n)
1	0
2	0
3	0
4	0
5	2
6	218
7	3070
8	32972
9	336196
10	3533026
11	39574122
12	477773658
13	6222603756
14	87162325448
15	1307616361026
16	20922578066742
17	355686650877778
18	6402370841198538
19	121645089807861208
20	2432901968797138968
21	51090942024922288784
22	1124000727228733213002

[0, 0, 0, 0, 2, 218, 3070, 32972, 336196, 3533026, 39574122, 477773658, 6222603756, 87162325448, 1307616361026, 20922578066742, 355686650877778, 6402370841198538, 121645089807861208, 2432901968797138968, 51090942024922288784, 1124000727228733213002]

cp's OEIS Frontend

A124188 Number of 3-good permutations on {1,2,...,n}, i.e., permutations that contain each of the six patterns {123, 132, 213, 231, 312, 321} as a subsequence.

Table of values

List of values