T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise.
A236082
T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing rowwise and columnwise.
Terms
- a(0) =81a(1) =576a(2) =576a(3) =3992a(4) =9979a(5) =3992a(6) =26088a(7) =169680a(8) =169680a(9) =26088a(10) =167892a(11) =2634205a(12) =7147799a(13) =2634205a(14) =167892a(15) =1060410a(16) =40097396a(17) =271135379a(18) =271135379a(19) =40097396a(20) =1060410a(21) =6648825a(22) =587963980a(23) =10003171144a(24) =25485868729a(25) =10003171144a(26) =587963980
External references
- oeis: A236082