Number of nX4 0..2 arrays with every element plus 1 mod 3 equal to some element at offset (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.
A277941
Number of nX4 0..2 arrays with every element plus 1 mod 3 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) =74a(2) =2353a(3) =84970a(4) =2967962a(5) =103960169a(6) =3638916907a(7) =127378891305
External references
- oeis: A277941