A050339 Number of factorizations with 2 levels of parentheses indexed by prime signatures. A050338(A025487).

1, 1, 4, 4, 10, 16, 30, 54, 22, 75, 74, 176, 102, 206, 267, 535, 399, 518, 950, 526, 1585, 154, 1094, 1446, 1344, 3091, 2252, 4527, 817, 4158, 4879, 3357, 9809, 8811, 12664, 3605, 14653, 3005, 15738, 8429, 10479, 29762, 4777, 16863, 31883, 34631

Offset

1,3

Links

Table of n, a(n) for n=1..46.

Crossrefs

Sequence in context: A185904 A201618 A341243 * A087288 A185779 A095009

Adjacent sequences: A050336 A050337 A050338 * A050340 A050341 A050342

Keyword

nonn

Author

Christian G. Bower, Oct 15 1999

Status

approved