Number of 3Xn 0..1 arrays with every element equal to 1, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
A302473
Number of 3Xn 0..1 arrays with every element equal to 1, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
Terms
- a(0) =0a(1) =11a(2) =49a(3) =203a(4) =955a(5) =4556a(6) =21843a(7) =103319a(8) =491073a(9) =2332753a(10) =11082938a(11) =52648987a(12) =250106679a(13) =1188163911a(14) =5644397853a(15) =26814116700a(16) =127381683511a(17) =605134192403
External references
- oeis: A302473