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A050348 Number of factorizations into distinct factors with 2 levels of parentheses indexed by prime signatures. A050347(A025487). 1
1, 1, 1, 4, 4, 10, 7, 26, 22, 14, 34, 63, 74, 29, 105, 143, 223, 57, 296, 312, 320, 154, 366, 617, 110, 769, 1087, 697, 641, 1136, 1589, 217, 1906, 3394, 1483, 2224, 3246, 1562, 3919, 417, 4251, 4561, 3175, 3858, 9736, 3111, 6910, 8772, 6183, 9327, 794 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..51.

CROSSREFS

Sequence in context: A286779 A007426 A319056 * A134637 A078910 A196051

Adjacent sequences:  A050345 A050346 A050347 * A050349 A050350 A050351

KEYWORD

nonn

AUTHOR

Christian G. Bower, Oct 15 1999

STATUS

approved

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Last modified September 17 19:15 EDT 2019. Contains 327137 sequences. (Running on oeis4.)