Number of ways to choose a multiset of n divisors of n - 1.

Terms

a(0) =1a(1) =2a(2) =3a(3) =10a(4) =5a(5) =56a(6) =7a(7) =120a(8) =45a(9) =220a(10) =11a(11) =4368a(12) =13a(13) =560a(14) =680a(15) =3876a(16) =17a(17) =26334a(18) =19a(19) =42504a(20) =1771a(21) =2024a(22) =23a(23) =2035800a(24) =325a(25) =3276a(26) =3654a(27) =201376a(28) =29a(29) =8347680