A050359 Number of ordered factorizations with 3 levels of parentheses indexed by prime signatures: A050358(A025487(n)).

1, 1, 5, 9, 25, 65, 125, 425, 121, 625, 605, 2625, 1145, 3125, 4825, 15625, 9225, 15625, 35125, 13265, 90625, 2169, 45225, 67625, 78125, 240625, 126025, 515625, 25385, 377625, 465625, 390625, 1578125, 1062625, 2890625, 242825, 2915625

Offset

1,3

Links

Table of n, a(n) for n=1..37.

Crossrefs

Sequence in context: A221567 A147512 A301960 * A062812 A032499 A112084

Adjacent sequences: A050356 A050357 A050358 * A050360 A050361 A050362

Keyword

nonn

Author

Christian G. Bower, Oct 15 1999

Extensions

Link in title corrected by Matthew Vandermast, Jul 03 2012

Status

approved