A241800 Number of ballot sequences of length n having exactly seven descents.

32, 1310, 26159, 349021, 3537427, 29216728, 205795528, 1274811402, 7106683612, 36230838069, 171229815244, 757346853197, 3162754360421, 12546713825786, 47572219652564, 173111049909503, 607264725020735, 2059610656640095, 6776341942347065, 21674530092011291

Offset

12,1

Links

Table of n, a(n) for n=12..31.

Crossrefs

Column k=7 of A238121 and of A238122.

Sequence in context: A275141 A275036 A274732 * A231040 A254152 A160447

Adjacent sequences: A241797 A241798 A241799 * A241801 A241802 A241803

Keyword

nonn

Author

Joerg Arndt and Alois P. Heinz, Apr 28 2014

Status

approved