1163232domain: NAppears in sequencesGreater of friendly pairs where both terms belong to A014574.at n=25A216058Array read by downward antidiagonals: A(n,k) = A(n-1,k+1) + 2*(k+1)!*Sum_{j=0..k} A(n-1,j)/j! with A(0,k) = 2*(k+1)!, n >= 0, k >= 0.at n=26A379459