A246224 - cp's OEIS frontend

A246224 Number of permutations of [n] with exactly four (possibly overlapping) occurrences of the consecutive step pattern given by the binary expansion of n, where 1=up and 0=down.

n	a(n)
7	1
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	255577419
16	0
17	0
18	9542007262728
19	6774382288791
20	0
21	2426035607748545873
22	7229099931331250350
23	1033055991550105110
24	2319374753629800000
25	19452094129713604966805
26	438500213962184713953125
27	45449834784068599467011795

[1, 0, 0, 0, 0, 0, 0, 0, 255577419, 0, 0, 9542007262728, 6774382288791, 0, 2426035607748545873, 7229099931331250350, 1033055991550105110, 2319374753629800000, 19452094129713604966805, 438500213962184713953125, 45449834784068599467011795]

cp's OEIS Frontend

A246224 Number of permutations of [n] with exactly four (possibly overlapping) occurrences of the consecutive step pattern given by the binary expansion of n, where 1=up and 0=down.

Table of values

List of values