Number of (n+1) X (6+1) 0..2 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally and vertically.
A253454
Number of (n+1) X (6+1) 0..2 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally and vertically.
Terms
- a(0) =19701a(1) =31630a(2) =39463a(3) =52912a(4) =83003a(5) =147332a(6) =285681a(7) =590963a(8) =1287225a(9) =2936843a(10) =7007361a(11) =17462243a(12) =45313545a(13) =121840763a(14) =337369041a(15) =955847123a(16) =2755067865a(17) =8040303083a(18) =23671154721a(19) =70114001603a(20) =208543126185a(21) =622031667803
External references
- oeis: A253454