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 A117324 #5 Mar 06 2013 14:14:11 %S A117324 2,3,227,729,22965,380555,156346,10920166,202913258,2973399074, %T A117324 39284376410,489544827463,5874954672992 %N A117324 Prime(10^n) modulo semiprime(10^n). %F A117324 a(n) = A000040(10^n) modulo A001358(10^n). a(n) = A117322(10^n). a(n) = A006988(n) modulo A114125(n). %e A117324 prime(10^0) modulo semiprime(10^0) = 2 mod 4 = 2. %e A117324 prime(10^1) modulo semiprime(10^1) = 29 mod 26 = 3. %e A117324 prime(10^2) modulo semiprime(10^2) = 541 mod 314 = 227. %K A117324 easy,nonn %O A117324 0,1 %A A117324 _Jonathan Vos Post_, Mar 08 2006 %E A117324 a(12) from _Zak Seidov_