Number of nX3 0..1 arrays with every element unequal to 1, 2, 3, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

A316735

Number of nX3 0..1 arrays with every element unequal to 1, 2, 3, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =14a(2) =23a(3) =36a(4) =210a(5) =509a(6) =1219a(7) =4537a(8) =12446a(9) =34074a(10) =107898a(11) =310388a(12) =888841a(13) =2671672a(14) =7794702a(15) =22673135a(16) =67020720a(17) =196302530a(18) =574105870a(19) =1687995611a(20) =4949193929a(21) =14501512606a(22) =42565223865a(23) =124832600401a(24) =366003755322

External references