A246222 - cp's OEIS frontend

A246222 Number of permutations of [n] with exactly two (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	99
8	0
9	13303
10	530432
11	2715243
12	14872704
13	712988175
14	2114735616
15	14553496947
16	22338508875
17	9307563626682
18	839345640802598
19	8486108520773778
20	298020352385025000
21	10432593658200450596
22	210875469472380711300
23	944599826416703171100
24	12667164470975664000000

[99, 0, 13303, 530432, 2715243, 14872704, 712988175, 2114735616, 14553496947, 22338508875, 9307563626682, 839345640802598, 8486108520773778, 298020352385025000, 10432593658200450596, 210875469472380711300, 944599826416703171100, 12667164470975664000000]

cp's OEIS Frontend

A246222 Number of permutations of [n] with exactly two (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