157741domain: NAppears in sequencesa(n) = the numerator of the continued fraction [[n/1];[n/2],[n/3],..,[n/n]] = the numerator of [[n/n];[n/(n-1)],[n/(n-2)],..,[n/1]], where [x] is floor(x).at n=12A128599Expansion of g.f. A(x) satisfying 1 = Sum_{n=-oo..+oo} (-1)^n * x^n * (A(x) + x^(4*n-1))^(n+1).at n=21A363144