T(n,k) = number of n X k nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 2 and every value within 2 of its king move distance from the upper left and every value increasing by 0 or 1 with every step right, diagonally se or down.
A253223
T(n,k) = number of n X k nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 2 and every value within 2 of its king move distance from the upper left and every value increasing by 0 or 1 with every step right, diagonally se or down.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =1a(4) =0a(5) =1a(6) =3a(7) =1a(8) =1a(9) =3a(10) =6a(11) =9a(12) =1a(13) =9a(14) =6a(15) =10a(16) =25a(17) =19a(18) =19a(19) =25a(20) =10a(21) =15a(22) =49a(23) =102a(24) =19a(25) =102a(26) =49a(27) =15a(28) =21a(29) =81
External references
- oeis: A253223