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

A050348

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

Terms

    a(0) =1a(1) =1a(2) =1a(3) =4a(4) =4a(5) =10a(6) =7a(7) =26a(8) =22a(9) =14a(10) =34a(11) =63a(12) =74a(13) =29a(14) =105a(15) =143a(16) =223a(17) =57a(18) =296a(19) =312a(20) =320a(21) =154a(22) =366a(23) =617a(24) =110a(25) =769a(26) =1087a(27) =697a(28) =641a(29) =1136

External references