Number of ways to choose a strict composition of each part of a strict integer partition of n.

Terms

a(0) =1a(1) =1a(2) =1a(3) =4a(4) =6a(5) =11a(6) =22a(7) =41a(8) =72a(9) =142a(10) =260a(11) =454a(12) =769a(13) =1416a(14) =2472a(15) =4465a(16) =7708a(17) =13314a(18) =23630a(19) =40406a(20) =68196a(21) =119646a(22) =203237a(23) =343242a(24) =586508a(25) =993764a(26) =1677187a(27) =2824072a(28) =4753066a(29) =7934268