Number of overcompositions of n minus the number of partitions of n.

Terms

a(0) =0a(1) =1a(2) =2a(3) =9a(4) =21a(5) =53a(6) =133a(7) =309a(8) =706a(9) =1572a(10) =3534a(11) =7752a(12) =16991a(13) =36807a(14) =79385a(15) =170528a(16) =364563a(17) =776739a(18) =1649071a(19) =3490698a(20) =7366917a(21) =15512544a(22) =32583646a(23) =68306009a(24) =142902505a(25) =298446956a(26) =622232624a(27) =1295316994a(28) =2692580198a(29) =5589582431