Number of (n+1) X (1+1) 0..2 arrays with every 2 X 2 subblock antidiagonal maximum minus diagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal minimum nondecreasing vertically.
A253526
Number of (n+1) X (1+1) 0..2 arrays with every 2 X 2 subblock antidiagonal maximum minus diagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal minimum nondecreasing vertically.
Terms
- a(0) =81a(1) =459a(2) =1963a(3) =7253a(4) =25165a(5) =85663a(6) =291511a(7) =997121a(8) =3427953a(9) =11826315a(10) =40885971a(11) =141512469a(12) =490082653a(13) =1697732055a(14) =5882051383a(15) =20380576545a(16) =70618256025a(17) =244694019755a(18) =847876017411
External references
- oeis: A253526