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

A271339

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

Terms

    a(0) =0a(1) =0a(2) =1a(3) =0a(4) =1a(5) =15a(6) =0a(7) =1a(8) =33a(9) =207a(10) =0a(11) =1a(12) =36a(13) =3798a(14) =3283a(15) =0a(16) =1a(17) =36a(18) =12195a(19) =960152a(20) =64650a(21) =0a(22) =1a(23) =36a(24) =18054a(25) =15971570a(26) =577747260a(27) =1640007a(28) =0a(29) =1

External references