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A050357 Number of ordered factorizations with 2 levels of parentheses indexed by prime signatures. 2
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

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

CROSSREFS

A050356(A025487).

Sequence in context: A027609 A145763 A144916 * A296059 A132334 A289521

Adjacent sequences:  A050354 A050355 A050356 * A050358 A050359 A050360

KEYWORD

nonn

AUTHOR

Christian G. Bower, Oct 15 1999

STATUS

approved

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Last modified November 18 18:05 EST 2018. Contains 317323 sequences. (Running on oeis4.)