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 A180015 #1 Aug 27 2010 03:00:00 %S A180015 2,3,5,7,307,433,25639,212419,1122179 %N A180015 List of Armstrong (narcissistic) numbers in base 8 that are prime (written in base 10). %e A180015 The term 25639 is equal to 62047 in base 8. 62047 has 5 digits, and 6^5 + 2^5 + 0^5 + 4^5 + 7^5 = 62047 (in base 8) = 25639 (in base 10). %Y A180015 Cf. A010354 %K A180015 base,fini,full,nonn %O A180015 1,1 %A A180015 Robin James Kerrison (rjk1994(AT)gmail.com), Aug 06 2010