Number of (n+1)X(2+1) 0..2 arrays with every 2X2 subblock summing to 3 4 or 5.

A251345

Number of (n+1)X(2+1) 0..2 arrays with every 2X2 subblock summing to 3 4 or 5.

Terms

    a(0) =309a(1) =3921a(2) =50831a(3) =663307a(4) =8671957a(5) =113445117a(6) =1484345363a(7) =19422725739a(8) =254151937033

External references