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 A127414 #12 Dec 31 2024 15:38:44 %S A127414 1,5,9,1,3,5,7,9,1,3,5,7,9,1,3,5,7,9,1,3,5,7,9,1,3,5,7,9,1,3,5,7,9,1, %T A127414 3,5,7,9,1,3,5,7,9,1,3,5,7,9,1,0,3,1,0,7,1,1,1,1,1,5,1,1,9,1,2,3,1,2, %U A127414 7,1,3,1,1,3,5,1,3,9,1,4,3,1,4,7,1,5,1,1,5,5,1,5,9,1,6,3,1,6,7,1,7,1,1,7,5 %N A127414 a(n) = A007376(4*n+1). %t A127414 A007376=Flatten[ IntegerDigits/@Range@ 500] ;Array[A007376[[4#+1]]&,105,0] (* _James C. McMahon_, Dec 31 2024 *) %K A127414 nonn,base %O A127414 0,2 %A A127414 _N. J. A. Sloane_, Jul 23 2008