Number of nX3 0..1 arrays with every element unequal to 0, 1, 2, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.
A317233
Number of nX3 0..1 arrays with every element unequal to 0, 1, 2, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =4a(1) =12a(2) =28a(3) =60a(4) =211a(5) =597a(6) =1619a(7) =4792a(8) =13802a(9) =39400a(10) =113525a(11) =326899a(12) =940153a(13) =2704316a(14) =7781698a(15) =22393110a(16) =64428105a(17) =185379093a(18) =533427975a(19) =1534875554a(20) =4416403250a(21) =12707841186a(22) =36565665643a(23) =105214062105a(24) =302743695225a(25) =871117391912
External references
- oeis: A317233