A050341 Number of factorizations with 3 levels of parentheses indexed by prime signatures. A050340(A025487).

1, 1, 5, 5, 15, 25, 55, 105, 35, 170, 145, 425, 205, 571, 660, 1611, 1010, 1789, 2938, 1345, 5941, 315, 3437, 4596, 5727, 12047, 7317, 21190, 2130, 16533, 19496, 17836, 47949, 36232, 74020, 11940, 73831, 9841, 78981, 55627, 43590, 183208, 15982

Offset

1,3

Links

Table of n, a(n) for n=1..43.

Crossrefs

Sequence in context: A185785 A185905 A341244 * A140360 A302511 A178821

Adjacent sequences: A050338 A050339 A050340 * A050342 A050343 A050344

Keyword

nonn

Author

Christian G. Bower, Oct 15 1999

Status

approved