A068018 - cp's OEIS frontend

A068018 Number of fixed points in all 132- and 213-avoiding permutations of {1,2,...,n} (these are permutations with runs consisting of consecutive integers).

n	a(n)
0	0
1	1
2	2
3	4
4	6
5	12
6	18
7	40
8	62
9	148
10	234
11	576
12	918
13	2284
14	3650
15	9112
16	14574
17	36420
18	58266
19	145648
20	233030
21	582556
22	932082
23	2330184
24	3728286
25	9320692
26	14913098
27	37282720
28	59652342
29	149130828
30	238609314
31	596523256
32	954437198
33	2386092964
34	3817748730
35	9544371792

[0, 1, 2, 4, 6, 12, 18, 40, 62, 148, 234, 576, 918, 2284, 3650, 9112, 14574, 36420, 58266, 145648, 233030, 582556, 932082, 2330184, 3728286, 9320692, 14913098, 37282720, 59652342, 149130828, 238609314, 596523256, 954437198, 2386092964, 3817748730, 9544371792]

cp's OEIS Frontend

A068018 Number of fixed points in all 132- and 213-avoiding permutations of {1,2,...,n} (these are permutations with runs consisting of consecutive integers).

Table of values

List of values