Number of n X 2 0..3 arrays with every element plus 1 mod 4 equal to some element at offset (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.
A278095
Number of n X 2 0..3 arrays with every element plus 1 mod 4 equal to some element at offset (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.
Terms
- a(0) =0a(1) =2a(2) =10a(3) =58a(4) =334a(5) =1910a(6) =10910a(7) =62314a(8) =355898a(9) =2032630a(10) =11608866a(11) =66301138a(12) =378662314a(13) =2162634690a(14) =12351344662a(15) =70541601526a(16) =402880631914
External references
- oeis: A278095