Number of 3 X n binary arrays with no two ones adjacent horizontally, diagonally or antidiagonally.

A228684

Number of 3 X n binary arrays with no two ones adjacent horizontally, diagonally or antidiagonally.

Terms

    a(0) =8a(1) =17a(2) =77a(3) =216a(4) =809a(5) =2529a(6) =8832a(7) =28793a(8) =97933a(9) =324464a(10) =1092561a(11) =3642241a(12) =12217528a(13) =40825697a(14) =136745357a(15) =457357256a(16) =1531058169a(17) =5122533089a(18) =17144628912a(19) =57369165513a(20) =191993439053a(21) =642478726624

External references