%I
%S 1,0,1,1,2,0,2,3,2,4,3,2,6,9,3,13,6,12,14,12,1,13,14,9,14,8,
%T 4,8,6,16,37,35,10,25,19,10,45,34,30,27,8,35,37,36,8,37,21,37,
%U 51,53,1,56,41,68,79,13,29,23,16,87,98,40,38,70,43,53,81,81,35,61,28,140,132,87,80,118,5
%N Second differences of A074658, which counts the convex partitions of n.
%C Up to n=246, the signs of the terms show some periodicity (mod 3): a(3n) is almost always negative and a(3n+2) is almost always positive. Does this continue?
%F a(n) = A074659(n+1)A074659(n) = A074658(n+2)2*A074658(n+1)+A074658(n)
%t Table[a[n+2]2a[n+1]+a[n], {n, 0, 76}] (* a[n] is defined in A074658. *)
%Y Cf. A074658, A074659.
%K sign
%O 0,5
%A _Dean Hickerson_, Aug 29 2002
