A050357 Number of ordered factorizations with 2 levels of parentheses indexed by prime signatures.

1, 1, 4, 7, 16, 40, 64, 208, 73, 256, 292, 1024, 544, 1024, 1840, 4864, 3472, 4096, 10624, 4936, 22528, 1015, 13552, 20224, 16384, 57856, 36976, 102400, 9328, 89344, 110848, 65536, 302080, 246784, 458752, 70480, 546304, 52996, 581632

Offset

1,3

Links

Table of n, a(n) for n=1..39.

Crossrefs

A050356(A025487).

Sequence in context: A145763 A144916 A217289 * A296059 A132334 A289521

Adjacent sequences: A050354 A050355 A050356 * A050358 A050359 A050360

Keyword

nonn

Author

Christian G. Bower, Oct 15 1999

Status

approved