%I #17 Sep 18 2015 15:39:32
%S 2,4,6,8,10,14,20,24,30,36,54,68,72,84,94,102,120,134,138,168,198,258,
%T 310,320,328,338,348,360,370,390,426,446,450,510,574,588,624,660,672,
%U 692,728,754,760,778,804,870,940,974,996,1014,1030,1036,1040,1044,1086,1142,1166,1174,1180,1194,1206,1210,1212,1230,1248,1260,1280,1292,1296
%N a(n)=sqrt(A178825(n)+A178825(n+1)).
%H <a href="/A177867/b177867.txt">Table of n, a(n) for n = 1..69</a>
%e n=1: A178825(1)+A178825(2)=1+3=2^2, hence a(1)=2,
%e n=2: A178825(2)+A178825(3)=3+13=4^2, hence a(2)=4,
%e n=3: A178825(3)+A178825(4)=13+23=6^2, hence a(3)=6.
%Y Cf. A178825.
%K nonn
%O 1,1
%A _Zak Seidov_, Dec 28 2010