This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A257816 #69 Jun 16 2015 13:43:01 %S A257816 4,5,6,8,8,9,10,10,11,12,15,15,13,14,18,20,17,21,24,25,22,25,27,23,23, %T A257816 24,28,30,30,25,26,27,32,36,28,30,33,35,40,38,32,42,35,33,45,45,44,45, %U A257816 37,45,46,42,39,40,43,51,55,45,49,56,43,44,45,48,54,53,60 %N A257816 Suppose A103739(n) = x^2 + y^2 with x < y. The sequence gives values of y. %C A257816 See first comment in A103739. %F A257816 a(n) = (A258653(n)+A258642(n))/2. %e A257816 a(1) = (A258653(1) + A258642(1))/2 = (5+3)/2 = 4; %e A257816 a(2) = (A258653(2) + A258642(2))/2 = (7+3)/2 = 5. %Y A257816 Cf. A103739, A258642, A258653, A258654 (values of x). %K A257816 nonn %O A257816 1,1 %A A257816 _Zak Seidov_, Jun 06 2015