Number of nX7 0..1 arrays with every element equal to 0, 1, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302634
Number of nX7 0..1 arrays with every element equal to 0, 1, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =21a(1) =185a(2) =83a(3) =304a(4) =1734a(5) =6460a(6) =30216a(7) =144266a(8) =642553a(9) =2942184a(10) =13568813a(11) =61798208a(12) =282661567a(13) =1295223226a(14) =5921237836a(15) =27085485076a(16) =123955468089a(17) =567032990681
External references
- oeis: A302634