Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 4 or 6 king-move adjacent elements, with upper left element zero.
A298288
Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 4 or 6 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =7a(2) =20a(3) =46a(4) =308a(5) =990a(6) =4679a(7) =26963a(8) =153319a(9) =1074940a(10) =8523830a(11) =71415327
External references
- oeis: A298288