Number of nX6 0..1 arrays with every element unequal to 0, 1 or 2 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

A317762

Number of nX6 0..1 arrays with every element unequal to 0, 1 or 2 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

Terms

    a(0) =32a(1) =89a(2) =100a(3) =127a(4) =177a(5) =266a(6) =425a(7) =709a(8) =1217a(9) =2126a(10) =3753a(11) =6666a(12) =11882a(13) =21223a(14) =37952a(15) =67914a(16) =121578a(17) =217696a(18) =389856a(19) =698220a(20) =1250549a(21) =2239862a(22) =4011891a(23) =7185904a(24) =12871122a(25) =23054360a(26) =41294363a(27) =73965487a(28) =132485357a(29) =237305006

External references