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

A271075

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

Terms

    a(0) =0a(1) =0a(2) =1a(3) =0a(4) =1a(5) =13a(6) =0a(7) =1a(8) =31a(9) =138a(10) =0a(11) =1a(12) =35a(13) =3192a(14) =1628a(15) =0a(16) =1a(17) =35a(18) =11652a(19) =688912a(20) =23527a(21) =0a(22) =1a(23) =35a(24) =18378a(25) =14051884a(26) =336562064a(27) =435147a(28) =0a(29) =1

External references