T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock diagonal maximum plus antidiagonal maximum nondecreasing horizontally and vertically.
A253985
T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock diagonal maximum plus antidiagonal maximum nondecreasing horizontally and vertically.
Terms
- a(0) =512a(1) =3372a(2) =3372a(3) =21304a(4) =36434a(5) =21304a(6) =136868a(7) =417518a(8) =417518a(9) =136868a(10) =881432a(11) =4858102a(12) =8727838a(13) =4858102a(14) =881432a(15) =5659548a(16) =55806952a(17) =179261149a(18) =179261149a(19) =55806952a(20) =5659548a(21) =36317408a(22) =642845877a(23) =3672381306a(24) =6386040127a(25) =3672381306
External references
- oeis: A253985