A050348 Number of factorizations into distinct factors with 2 levels of parentheses indexed by prime signatures. A050347(A025487).

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

Offset

1,4

Links

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

Crossrefs

Sequence in context: A339336 A319056 A369225 * A134637 A078910 A196051

Adjacent sequences: A050345 A050346 A050347 * A050349 A050350 A050351

Keyword

nonn

Author

Christian G. Bower, Oct 15 1999

Status

approved