Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
A301319
Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =1a(1) =7a(2) =45a(3) =302a(4) =1649a(5) =7600a(6) =31172a(7) =119694a(8) =446581a(9) =1658182a(10) =6211592a(11) =23593138a(12) =91031007a(13) =354490536a(14) =1502008575a(15) =5520750802a(16) =463638209284
External references
- oeis: A301319