Number of partitions satisfying 0 < cn(1,5) + cn(4,5).

Terms

a(0) =0a(1) =1a(2) =1a(3) =2a(4) =4a(5) =5a(6) =9a(7) =12a(8) =18a(9) =26a(10) =35a(11) =50a(12) =67a(13) =90a(14) =122a(15) =158a(16) =212a(17) =272a(18) =355a(19) =457a(20) =582a(21) =745a(22) =941a(23) =1185a(24) =1494a(25) =1858a(26) =2325a(27) =2875a(28) =3561a(29) =4388