Number of compositions of n containing at least one part p of multiplicity p.

Terms

a(0) =0a(1) =1a(2) =0a(3) =2a(4) =3a(5) =5a(6) =14a(7) =28a(8) =44a(9) =101a(10) =207a(11) =399a(12) =779a(13) =1609a(14) =3122a(15) =6121a(16) =11804a(17) =23631a(18) =46273a(19) =91604a(20) =178096a(21) =352419a(22) =691996a(23) =1371306a(24) =2702206a(25) =5356324a(26) =10604748a(27) =21080216a(28) =41869930a(29) =83383786