Number of (n+1) X (7+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).
A235097
Number of (n+1) X (7+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) =83224a(1) =117488a(2) =173440a(3) =306532a(4) =556560a(5) =1160340a(6) =2420288a(7) =5516124a(8) =12489280a(9) =29986228a(10) =71750944a(11) =179330796a(12) =449031120a(13) =1166157172a(14) =3047852144a(15) =8233837692a(16) =22446543984a(17) =63085200868a(18) =178987944256a(19) =521842413052
External references
- oeis: A235097