Number of semi-sums of integer partitions of n.

Terms

a(0) =0a(1) =0a(2) =1a(3) =2a(4) =5a(5) =9a(6) =17a(7) =28a(8) =46a(9) =72a(10) =111a(11) =166a(12) =243a(13) =352a(14) =500a(15) =704a(16) =973a(17) =1341a(18) =1819a(19) =2459a(20) =3277a(21) =4363a(22) =5735a(23) =7529a(24) =9779a(25) =12685a(26) =16301a(27) =20929a(28) =26638a(29) =33878