%I
%S 1,1,2,1,2,1,4,3,1,4,3,2,5,2,5,1,8,7,2,3,4,5,2,5,2,3,2,7,4,7,
%T 4,1,4,3,4,9,2,3,2,7,4,7,2,7,4,9,1,6,5,4,5,2,9,4,7,2,7,2,9,2,
%U 9,2,3,8,9,2,5,4,5,2,9,4,5,4,7,4,9,4,7,2,7,4,7,2,7,6,5,2,5,4,3,2,13,6,11,2,9,2,3,8,9,2,9,2,9
%N First differences of A121216.
%H Rémy Sigrist, <a href="/A352933/b352933.txt">Table of n, a(n) for n = 1..10000</a>
%H Rémy Sigrist, <a href="/A352933/a352933.txt">C program</a>
%o (C) See Links section.
%Y Cf. A121216.
%K sign
%O 1,3
%A _N. J. A. Sloane_, May 05 2022
