Number of (n+1) X (3+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).
A235012
Number of (n+1) X (3+1) 0..4 arrays with every 2 X 2 subblock having its diagonal sum differing from its antidiagonal sum by 3, with no adjacent elements equal (constant-stress tilted 1 X 1 tilings).
Terms
- a(0) =264a(1) =488a(2) =936a(3) =1912a(4) =4008a(5) =8760a(6) =19560a(7) =44952a(8) =105128a(9) =250744a(10) =605928a(11) =1483288a(12) =3663912a(13) =9124728a(14) =22858344a(15) =57552408a(16) =145440680a(17) =368673400a(18) =936669672a(19) =2384161816a(20) =6076987176a(21) =15506905464a(22) =39603020136a(23) =101209873944a(24) =258785240744
External references
- oeis: A235012