T(n,k)=Number of (k+1) colorings of a side-n hexagonal array with colors introduced in row major order.

A216792

T(n,k)=Number of (k+1) colorings of a side-n hexagonal array with colors introduced in row major order.

Terms

    a(0) =1a(1) =1a(2) =0a(3) =1a(4) =1a(5) =0a(6) =1a(7) =11a(8) =1a(9) =0a(10) =1a(11) =31a(12) =5318a(13) =1a(14) =0a(15) =1a(16) =40a(17) =2976610a(18) =22831676a(19) =1a(20) =0a(21) =1a(22) =41a(23) =151280046a(25) =915294166360a(26) =1a(27) =0a(28) =1a(29) =41a(30) =1780127826

External references