2560320domain: NAppears in sequencesTriangular array read by rows. T(n,k) is the number of invertible n X n matrices over GF(2) that decompose into the direct sum of k cyclic matrices, 0<=k<=n, n>=0.at n=16A346081Numbers k such that A380845(k)/k > A380845(m)/m for all m < k.at n=27A381070