Number of (n+1) X (1+1) 0..3 arrays with every 2 X 2 subblock having the sum of the squares of the edge differences equal to 10, and no two adjacent values equal.

A233684

Number of (n+1) X (1+1) 0..3 arrays with every 2 X 2 subblock having the sum of the squares of the edge differences equal to 10, and no two adjacent values equal.

Terms

    a(0) =32a(1) =108a(2) =356a(3) =1188a(4) =3940a(5) =13108a(6) =43540a(7) =144740a(8) =480964a(9) =1598548a(10) =5312436a(11) =17655684a(12) =58676452a(13) =195006452a(14) =648083796a(15) =2153846948a(16) =7158099972a(17) =23789267092a(18) =79061340148a(19) =262752815812a(20) =873233798180

External references