%I #9 Mar 02 2018 03:08:04
%S 2,5,10,17,26,37,50,82,101,122,197,226,257,362,401,577,626,677,842,
%T 1226,1297,1522,1601,1682,2026,2402,2602,2917,3137,3482,3722,4226,
%U 4357,4762,5042,5477,6242,7057,7226,8101,8837,9026,10202,12101,13457,14401
%N Numbers of the form n^2+1 not expressible as j^2+k^2 with j>k>1.
%H Hugo Pfoertner, <a href="/A300164/b300164.txt">Table of n, a(n) for n = 1..10000</a>
%e The first numbers of the form n^2 + 1 not in the sequence are:
%e 65 = 8^2 + 1 because it can be expressed as 65 = 7^2 + 4^2,
%e 145 = 12^2 + 1 = 9^2 + 8^2,
%e 170 = 13^2 + 1 = 11^2 + 7^2.
%Y Cf. A050796, A065876, A071557, A299708.
%K nonn
%O 1,1
%A _Hugo Pfoertner_, Feb 27 2018