Number of nX3 0..1 arrays with every element equal to 1, 2, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

A299309

Number of nX3 0..1 arrays with every element equal to 1, 2, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =7a(2) =15a(3) =29a(4) =63a(5) =199a(6) =593a(7) =1657a(8) =4689a(9) =13395a(10) =38357a(11) =109855a(12) =313667a(13) =896417a(14) =2563517a(15) =7330205a(16) =20956899a(17) =59914557a(18) =171302635a(19) =489779503a(20) =1400327457a(21) =4003663145a(22) =11446878297a(23) =32727841823a(24) =93572301793a(25) =267532776375a(26) =764903730599

External references