Number of nXn 0..1 arrays with every element unequal to 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A317734
Number of nXn 0..1 arrays with every element unequal to 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =1a(2) =1a(3) =4a(4) =14a(5) =22a(6) =274a(7) =676a(8) =3242a(9) =11126a(10) =82244a(11) =533332a(12) =3119164a(13) =25366420a(14) =294184154a(15) =2840519658a(16) =33041657228a(17) =516226778736
External references
- oeis: A317734