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 A036149 #10 Jul 08 2025 21:35:58 %S A036149 1,5,25,125,154,142,82,96,9,45,68,26,130,22,110,79,81,91,141,77,71,41, %T A036149 48,83,101,34,13,65,11,55,118,119,124,149,117,114,99,24,120,129,17,85, %U A036149 111,84,106,59,138,62,153,137 %N A036149 5^n mod 157. %D A036149 I. M. Vinogradov, Elements of Number Theory, pp. 220 ff. %p A036149 [ seq(primroot(ithprime(i))^j mod ithprime(i),j=0..100) ]; %t A036149 PowerMod[5,Range[0,50],157] (* _Harvey P. Dale_, May 14 2014 *) %o A036149 (PARI) a(n)=lift(Mod(5,157)^n) \\ _Charles R Greathouse IV_, Mar 22 2016 %K A036149 nonn,easy %O A036149 0,2 %A A036149 _N. J. A. Sloane_