T(n,k) = Number of n X k nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 3 and every value within 3 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.
A253004
T(n,k) = Number of n X k nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 3 and every value within 3 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) =0a(4) =0a(5) =0a(6) =1a(7) =0a(8) =0a(9) =1a(10) =4a(11) =1a(12) =0a(13) =1a(14) =4a(15) =10a(16) =14a(17) =1a(18) =1a(19) =14a(20) =10a(21) =20a(22) =55a(23) =34a(24) =1a(25) =34a(26) =55a(27) =20a(28) =35a(29) =140
External references
- oeis: A253004