A287328 - cp's OEIS frontend

A287328 Number of permutations of [n] with exactly n (possibly overlapping) occurrences of the generalized pattern 13-2 (alternatively: 2-13, 2-31, or 31-2).

n	a(n)
0	1
1	0
2	0
3	0
4	0
5	0
6	2
7	42
8	716
9	11115
10	166144
11	2440438
12	35573362
13	517145226
14	7517489564
15	109427233994
16	1596263948916
17	23344423478564
18	342325226476816
19	5033781463313268
20	74223067319020872
21	1097343555359525542
22	16265399526715750734
23	241690082996256941332

[1, 0, 0, 0, 0, 0, 2, 42, 716, 11115, 166144, 2440438, 35573362, 517145226, 7517489564, 109427233994, 1596263948916, 23344423478564, 342325226476816, 5033781463313268, 74223067319020872, 1097343555359525542, 16265399526715750734, 241690082996256941332]

cp's OEIS Frontend

A287328 Number of permutations of [n] with exactly n (possibly overlapping) occurrences of the generalized pattern 13-2 (alternatively: 2-13, 2-31, or 31-2).

Table of values

List of values