7679508480domain: NAppears in sequencesTriangular array read by rows. T(n,k) = A002884(n)/A002884(n-k)*2^((n-k)(n-k-1)), n>=0, 0<=k<=n.at n=24A348958Triangular array read by rows: T(n,k) is the number of n X n matrices A over GF(2) such that the dimension of the null space of A^n is equal to k, n>=0, 0<=k<=n.at n=24A385355