Number of 3Xn 0..1 arrays with every element equal to 0, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

A302213

Number of 3Xn 0..1 arrays with every element equal to 0, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Terms

    a(0) =4a(1) =2a(2) =16a(3) =5a(4) =32a(5) =22a(6) =72a(7) =101a(8) =216a(9) =486a(10) =968a(11) =2541a(12) =5598a(13) =14718a(14) =35506a(15) =91947a(16) =231984a(17) =597758a(18) =1533828a(19) =3954067a(20) =10201602a(21) =26336704a(22) =68062810a(23) =175893407a(24) =454813604a(25) =1176002162a(26) =3041473404a(27) =7866219629a(28) =20346282584a(29) =52627527962

External references