Number of (n+1)X(3+1) 0..2 arrays with every 2X2 subblock antidiagonal maximum minus diagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal minimum nondecreasing vertically.
A253528
Number of (n+1)X(3+1) 0..2 arrays with every 2X2 subblock antidiagonal maximum minus diagonal minimum nondecreasing horizontally and diagonal maximum minus antidiagonal minimum nondecreasing vertically.
Terms
- a(0) =1963a(1) =9255a(2) =22418a(3) =62237a(4) =142679a(5) =327147a(6) =700492a(7) =1477077a(8) =3032758a(9) =6133637a(10) =12288617a(11) =24390278a(12) =48315319a(13) =95291840a(14) =188147188a(15) =371030185a(16) =733190192a(17) =1449380597a(18) =2871171233a(19) =5693041370a(20) =11308044039a(21) =22483109832a(22) =44759818386
External references
- oeis: A253528