%I #7 Mar 07 2018 06:48:03
%S 0,6,702,375186,68548170,212649972618,5572180693170,52037240544974502,
%T 11661547289636534670,9015983814263107529634,262721633707681615189866,
%U 10335648343425700490571339750,309124221331162265697856664958
%N a(n) = b(n)*lcm{1,2,..,n}^3 where b(n) is a sequence of rationals arising in irrationality proof of zeta(3).
%C Always an integer (divisible by 6).
%F a(n) = (A059415(n)/A059416(n))*A003418(n)^3.
%Y Cf. A003418, A005259, A059415, A059416.
%K nonn
%O 0,2
%A _Benoit Cloitre_, Dec 27 2005