882230895domain: NAppears in sequencesDistinct odd numbers in the triangle of denominators in Leibniz's Harmonic Triangle.at n=32A046201a(n) = C(n)*(6*n + 1) where C(n) = Catalan numbers (A000108).at n=15A050476Numerators in expansion of (1-x)^(-7/2).at n=12A161201