A050350 Number of factorizations into distinct factors with 3 levels of parentheses indexed by prime signatures. A050349(A025487).

1, 1, 1, 5, 5, 15, 11, 45, 35, 25, 65, 130, 145, 60, 240, 351, 520, 141, 810, 775, 926, 315, 1037, 1721, 321, 2532, 3302, 2392, 1640, 3951, 5310, 742, 7500, 12498, 6043, 6915, 13795, 4970, 15624, 1688, 16198, 21435, 10352, 16733, 43404, 15035, 25967

Offset

1,4

Links

Table of n, a(n) for n=1..47.

Crossrefs

Sequence in context: A255304 A339337 A330567 * A196060 A147266 A147152

Adjacent sequences: A050347 A050348 A050349 * A050351 A050352 A050353

Keyword

nonn

Author

Christian G. Bower, Oct 15 1999

Status

approved