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 A256365 #21 Feb 16 2025 08:33:25 %S A256365 36125,190125,444925 %N A256365 Numbers that are multiple-digit narcissistic numbers in exactly six bases. %H A256365 W. Schneider, <a href="http://web.archive.org/web/20050213060737/http://www.wschnei.de/digit-related-numbers/pdi.html">Perfect Digital Invariants: Pluperfect Digital Invariants(PPDIs)</a> %H A256365 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/NarcissisticNumber.html">Narcissistic Number</a> %H A256365 Wikipedia, <a href="http://en.wikipedia.org/wiki/Narcissistic_number">Narcissistic number</a> %e A256365 a(1) = 36125 because this is the first number that is a multiple-digit narcissistic number in exactly six bases (193, 212, 327, 423, 1057 and 7187). %o A256365 (PARI) for(n=3, 1000000, k=0; for(z=2, n, y=n; j=0; L=List(); until(y==0, x=y%z; j++; listinsert(L, x, j); while(!((y%z)==0), y--); y=y/z); t=0; for(p=1, j, t+=L[p]^j); if(n==t, k++)); if(k==6, print1(n, ", "))) %Y A256365 Cf. A005188. %Y A256365 Cf. A256359 (every number of bases). %Y A256365 Cf. A256360, A256361, A256362, A256363, A256364 (1 to 5 bases). %Y A256365 Cf. A256459 (first occurrences). %K A256365 nonn,base,bref,more %O A256365 1,1 %A A256365 _Tim Johannes Ohrtmann_, Mar 30 2015