Number of n X 3 binary matrices with no three 1's adjacent in a line horizontally, vertically, diagonally or antidiagonally.

A181219

Number of n X 3 binary matrices with no three 1's adjacent in a line horizontally, vertically, diagonally or antidiagonally.

Terms

    a(0) =7a(1) =49a(2) =230a(3) =1209a(4) =6475a(5) =34020a(6) =179097a(7) =944514a(8) =4978956a(9) =26241679a(10) =138316703a(11) =729070278a(12) =3842881010a(13) =20255521442a(14) =106765644778a(15) =562755120940

External references