A335308 - cp's OEIS frontend

A335308 Number of permutations p of [n] such that the sequence of ascents and descents of p is encoded by the 0's and 1's, respectively, in the binary expansion of n (read from right to left and using leading 0's if necessary).

n	a(n)
0	1
1	0
2	0
3	1
4	3
5	16
6	26
7	20
8	69
9	370
10	1006
11	945
12	1266
13	3015
14	2365
15	1001
16	4367
17	24736
18	76960
19	69615
20	138397
21	322944
22	286824
23	133056
24	159391
25	546504
26	978054
27	674245
28	531530
29	957320
30	495495
31	142506
32	906191
33	5537808
34	18828096
35	16231039
36	37000909
37	81351936
38	71761536

[1, 0, 0, 1, 3, 16, 26, 20, 69, 370, 1006, 945, 1266, 3015, 2365, 1001, 4367, 24736, 76960, 69615, 138397, 322944, 286824, 133056, 159391, 546504, 978054, 674245, 531530, 957320, 495495, 142506, 906191, 5537808, 18828096, 16231039, 37000909, 81351936, 71761536]

cp's OEIS Frontend

A335308 Number of permutations p of [n] such that the sequence of ascents and descents of p is encoded by the 0's and 1's, respectively, in the binary expansion of n (read from right to left and using leading 0's if necessary).

Table of values

List of values