A246223 Number of permutations of [n] with exactly three (possibly overlapping) occurrences of the consecutive step pattern given by the binary expansion of n, where 1=up and 0=down.

12, 0, 0, 158720, 74601, 0, 59062275, 17730048, 2099186631, 10006375, 206421198786, 135518026916798, 569885619485772, 13007265031125000, 5556193492800826418, 52483739349674666340, 51836903694327604380, 388109358965377200000, 302747316148839193725590

Offset

7,1

Links

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

Crossrefs

Column k=3 of A242783.

Sequence in context: A064141 A230526 A156401 * A199542 A304330 A322731

Adjacent sequences: A246220 A246221 A246222 * A246224 A246225 A246226

Keyword

nonn

Author

Alois P. Heinz, Aug 19 2014

Status

approved