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 A217610 #7 Jul 05 2013 13:25:01 %S A217610 1100090011,1100900011,1103093011,1103903011,1154094511,1154904511, %T A217610 1213093121,1213903121,1304094031,1304904031,1364094631,1364904631, %U A217610 1367097631,1367907631,1421091241,1421901241,1450090541,1450900541,1466096641,1466906641,1495095941,1495905941,1498098941,1498908941 %N A217610 Emirps (A006567) whose difference with the reversal is a perfect 4th power (A000583). %C A217610 This is to A217387 as perfect 4th powers (A000583) are to perfect cubes (A000578), and as A217386 is to perfect squares (A000290). Subset of A217386, since every perfect 4th power is a perfect square (though not vice versa). In these terms all the difference are equal to 30^4. %C A217610 Values a(1) through a(24) supplied by _Giovanni Resta_. %Y A217610 Cf. A004086, A006567, A217286, A217386, A217387, 217591. %K A217610 nonn,base %O A217610 1,1 %A A217610 _Jonathan Vos Post_, Oct 06 2012