27852domain: NAppears in sequencesEngel expansion of log(Pi) = 1.14473... .at n=7A059195Antidiagonal sums of A163280.at n=34A163983Antidiagonal sums of the convolution array A213576.at n=13A213578G.f. satisfies: A(x) = 1 + x*A(x) * ( d/dx x*A(x)^3 ).at n=5A317353