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.

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

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=4 of A242783.