73324domain: NAppears in sequencesa(1)=a(2)=1; a(n)=reverse(reverse(a(n-1))+reverse(a(n-2))) for n > 2.at n=25A072210a(n) = Sum_{k=0..n} q(k)^2, where q(k) = partition numbers into distinct parts (A000009).at n=25A265093Expansion of e.g.f. log( 1 - log(1 - x)^3 / 6 ).at n=9A377376