102097domain: NAppears in sequencesIndices n == 1 (mod 9) such that the 3 X 3 matrix with components (row by row) prime(n+k), 0 <= k <= 8, has zero determinant.at n=8A117359E.g.f. A(x) satisfies A(x) = exp(x*A(x)/(1 + x)).at n=8A335945