Number of 2 X n 0..3 arrays with every element plus 1 mod 4 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.
A278189
Number of 2 X n 0..3 arrays with every element plus 1 mod 4 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.
Terms
- a(0) =0a(1) =3a(2) =19a(3) =136a(4) =935a(5) =6381a(6) =43478a(7) =296105a(8) =2016307a(9) =13729364a(10) =93484479a(11) =636542307a(12) =4334257038a(13) =29512224731a(14) =200950553535
External references
- oeis: A278189