Number of (n+1) X (3+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

A235093

Number of (n+1) X (3+1) 0..5 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 4, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).

Terms

    a(0) =808a(1) =1728a(2) =3832a(3) =9460a(4) =23792a(5) =63884a(6) =173440a(7) =491596a(8) =1403944a(9) =4134548a(10) =12235728a(11) =37057844a(12) =112505216a(13) =347784756a(14) =1075280328a(15) =3373236492a(16) =10564408720a(17) =33488371740a(18) =105827385472a(19) =337928612524

External references