T(n,k)=Number of nXnXn triangular 0..k arrays with new values introduced in sequential zero-upwards order and exactly one inverted 2x2x2 triangle having values all equal.

A271407

T(n,k)=Number of nXnXn triangular 0..k arrays with new values introduced in sequential zero-upwards order and exactly one inverted 2x2x2 triangle having values all equal.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =8a(6) =0a(7) =0a(8) =14a(9) =216a(10) =0a(11) =0a(12) =15a(13) =2592a(14) =6048a(15) =0a(16) =0a(17) =15a(18) =7308a(19) =896832a(20) =203256a(21) =0a(22) =0a(23) =15a(24) =10368a(25) =12228624a(26) =685305792a(27) =8627472a(28) =0a(29) =0

External references