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) =1a(2) =3a(3) =8a(4) =22a(5) =54a(6) =128a(7) =282a(8) =602a(9) =1235a(10) =2474a(11) =4831a(12) =9263a(13) =17418a(14) =32242a(15) =58737a(16) =105519a(17) =186976a(18) =327238a(19) =565896a(20) =967910a(21) =1638175a(22) =2745588a(23) =4558864a(24) =7503737a(25) =12248234a(26) =19835700a(27) =31882617a(28) =50881290a(29) =80648122