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 A267216 #6 Feb 02 2016 03:36:21 %S A267216 9,21,28,33,45,47,51,53,55,61,65,66,68,69,70,73,75,77,81,82,84,87,89, %T A267216 91,93,95,97,103,105,107,108,109,110,111,113,114,116,117,119,123,128, %U A267216 129,131,133,135,136,139,142,143,145,147,149,150,152,154,156,157,161 %N A267216 Numbers D such that D^2 = A^2 + B^3 + C^4 has more than two solutions in positive integers (A, B, C). %C A267216 Subsequence of A256604. %H A267216 Chai Wah Wu, <a href="/A267216/b267216.txt">Table of n, a(n) for n = 1..10000</a> %e A267216 9^2 = 1^2 + 4^3 + 2^4 = 4^2 + 4^3 + 1^4 = 8^2 + 1^3 + 2^4. %e A267216 21^2 = 11^2 + 4^3 + 4^4 = 12^2 + 6^3 + 3^4 = 19^2 + 4^3 + 2^4. %Y A267216 Cf. A256604. %K A267216 nonn %O A267216 1,1 %A A267216 _Chai Wah Wu_, Feb 01 2016