Number of partitions of 5n such that cn(1,5) = cn(4,5) <= cn(2,5) = cn(3,5) < cn(0,5).

Terms

a(0) =1a(1) =2a(2) =4a(3) =10a(4) =25a(5) =62a(6) =145a(7) =323a(8) =689a(9) =1417a(10) =2831a(11) =5517a(12) =10532a(13) =19734a(14) =36377a(15) =66042a(16) =118240a(17) =208929a(18) =364689a(19) =629238a(20) =1073964a(21) =1814246a(22) =3035236a(23) =5031509a(24) =8268583a(25) =13476606a(26) =21793642a(27) =34981783a(28) =55753411a(29) =88258773