Number of overcompositions of n.

Terms

a(0) =1a(1) =2a(2) =4a(3) =12a(4) =26a(5) =60a(6) =144a(7) =324a(8) =728a(9) =1602a(10) =3576a(11) =7808a(12) =17068a(13) =36908a(14) =79520a(15) =170704a(16) =364794a(17) =777036a(18) =1649456a(19) =3491188a(20) =7367544a(21) =15513336a(22) =32584648a(23) =68307264a(24) =142904080a(25) =298448914a(26) =622235060a(27) =1295320004a(28) =2692583916a(29) =5589586996