Number of 5Xn 0..1 arrays with every element equal to 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

A302730

Number of 5Xn 0..1 arrays with every element equal to 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

Terms

    a(0) =0a(1) =61a(2) =301a(3) =353a(4) =1307a(5) =4505a(6) =16265a(7) =46773a(8) =136935a(9) =481479a(10) =1631059a(11) =5055540a(12) =16067446a(13) =52668892a(14) =175365361a(15) =562163896a(16) =1807393316a(17) =5893267465a(18) =19311336692a(19) =62623833763a(20) =202770902304a(21) =659588139794

External references