270620domain: NAppears in sequencesTriangle of coefficients of p(x,n) = (1/2)*(1-x)^(n+1)*Sum_{m >= 0} ((4*m+3)^n - (4*m+1)^n)*x^m, read by rows.at n=23A154854G.f. satisfies A(x) = exp( Sum_{k>=1} A(x^k) * x^k/(k * (1 + x^k)^2) ).at n=51A363567Number of ordered pairs of disjoint strict integer partitions of n.at n=40A365662