Triangle read by rows: T(n,k) is the number of k-regular graphs on n unlabeled nodes with half-edges.

A333161

Triangle read by rows: T(n,k) is the number of k-regular graphs on n unlabeled nodes with half-edges.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =2a(8) =2a(9) =1a(10) =1a(11) =3a(12) =3a(13) =3a(14) =1a(15) =1a(16) =3a(17) =4a(18) =4a(19) =3a(20) =1a(21) =1a(22) =4a(23) =8a(24) =12a(25) =8a(26) =4a(27) =1a(28) =1a(29) =4

External references