Number of nX3 0..1 arrays with every element unequal to 0, 1, 2, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.
A316878
Number of nX3 0..1 arrays with every element unequal to 0, 1, 2, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.
Terms
- a(0) =4a(1) =14a(2) =37a(3) =105a(4) =388a(5) =1280a(6) =4121a(7) =13933a(8) =46641a(9) =154593a(10) =516270a(11) =1725502a(12) =5753200a(13) =19197252a(14) =64095188a(15) =213911810a(16) =713904833a(17) =2382943651a(18) =7953695202a(19) =26546786860a(20) =88606850547a(21) =295748963969a(22) =987132925969
External references
- oeis: A316878