Number of compositions of n in which each part p has multiplicity p.

Terms

a(0) =1a(1) =1a(2) =0a(3) =0a(4) =1a(5) =3a(6) =0a(7) =0a(8) =0a(9) =1a(10) =4a(11) =0a(12) =0a(13) =10a(14) =60a(15) =0a(16) =1a(17) =5a(18) =0a(19) =0a(20) =15a(21) =105a(22) =0a(23) =0a(24) =0a(25) =36a(26) =286a(27) =0a(28) =0a(29) =1281