Triangle read by rows, 1 <= k <= n: T(n,k) = non-isomorphic colorings of a toroidal n X k grid using exactly two colors under translational symmetry and swappable colors.

A294791

Triangle read by rows, 1 <= k <= n: T(n,k) = non-isomorphic colorings of a toroidal n X k grid using exactly two colors under translational symmetry and swappable colors.

Terms

    a(0) =0a(1) =1a(2) =4a(3) =1a(4) =7a(5) =31a(6) =3a(7) =23a(8) =179a(9) =2107a(10) =3a(11) =55a(12) =1095a(13) =26271a(14) =671103a(15) =7a(16) =189a(17) =7327a(18) =350063a(19) =17896831a(20) =954459519a(21) =9a(22) =595a(23) =49939a(24) =4794087a(25) =490853415a(26) =52357746895a(28) =19a(29) =2101a(30) =349715

External references