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

Terms

a(0) =0a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =3a(7) =4a(8) =4a(9) =7a(10) =6a(11) =10a(12) =11a(13) =13a(14) =18a(15) =19a(16) =25a(17) =30a(18) =33a(19) =45a(20) =47a(21) =61a(22) =70a(23) =81a(24) =100a(25) =111a(26) =135a(27) =157a(28) =177a(29) =218