Number of partitions of n having exactly one part with multiplicity 3.

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =0a(5) =1a(6) =2a(7) =3a(8) =3a(9) =5a(10) =8a(11) =13a(12) =13a(13) =23a(14) =28a(15) =40a(16) =49a(17) =71a(18) =89a(19) =123a(20) =147a(21) =198a(22) =249a(23) =329a(24) =400a(25) =518a(26) =642a(27) =825a(28) =996a(29) =1265