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.

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

Offset: 7

Author

Alois P. Heinz, Aug 19 2014

Keywords

• nonn

Links

• Alois P. Heinz, Table of n, a(n) for n = 7..130

Crossrefs

Column k=2 of A242783.