Number of nX3 0..1 arrays with every element unequal to 0, 1, 3, 4, 7 or 8 king-move adjacent elements, with upper left element zero.

A316547

Number of nX3 0..1 arrays with every element unequal to 0, 1, 3, 4, 7 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =3a(1) =7a(2) =10a(3) =17a(4) =36a(5) =69a(6) =129a(7) =260a(8) =544a(9) =1125a(10) =2348a(11) =4964a(12) =10600a(13) =22871a(14) =49765a(15) =108917a(16) =239565a(17) =529370a(18) =1174297a(19) =2613116a(20) =5829349a(21) =13029909a(22) =29171534a(23) =65394966a(24) =146752417a(25) =329601228a(26) =740764602a(27) =1665714364a(28) =3747169233a(29) =8432404873

External references