Number of nX3 0..1 arrays with every element unequal to 1, 2, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

A305177

Number of nX3 0..1 arrays with every element unequal to 1, 2, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =2a(2) =8a(3) =9a(4) =14a(5) =29a(6) =49a(7) =78a(8) =135a(9) =245a(10) =406a(11) =683a(12) =1197a(13) =2070a(14) =3483a(15) =5981a(16) =10350a(17) =17699a(18) =30165a(19) =51886a(20) =89163a(21) =152485a(22) =261078a(23) =448451a(24) =768941a(25) =1316422a(26) =2257067a(27) =3872653a(28) =6636062a(29) =11371011

External references