16307453952domain: NAppears in sequencesLet M_n be the n X n matrix m(i,j) = min(prime(i), prime(j)); then a(n) = det(M_n).at n=20A070323Number of length n+5 0..2 arrays with no six consecutive terms having two times the sum of any two elements equal to the sum of the remaining four.at n=25A249227