57678domain: NAppears in sequencesMcKay-Thompson series of class 28D for Monster.at n=40A058609Expansion of e.g.f.: 2*(x-1)*tan(x/2+Pi/4)-x^2+2.at n=10A131281Array read by downward antidiagonals: A(n,k) = A(n-1,k+1) + (k+1)*Sum_{j=0..k} A(n-1,j) with A(0,k) = k+1, n >= 0, k >= 0.at n=48A371567