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 A133213 #5 Mar 31 2012 10:26:06 %S A133213 3,23,31,61,97,103,157,173,241,271,313,421,433,443,449,491,503,503, %T A133213 523,541,541,547,557,607,617,617,647,673,673,733,757,773,787,811,821, %U A133213 823,887,907,911,929,977,983,991,997,1019,1103,1123,1123,1171,1201,1201 %N A133213 Prime partial sums of digits of decimal expansion of pi (A000796). %C A133213 Prime terms of A046974. %t A133213 Select[Accumulate[First[RealDigits[N[ \[Pi],500]]]],PrimeQ] [Harvey Dale] %Y A133213 Cf. A000796, A046974, A180231. %K A133213 nonn,base %O A133213 1,1 %A A133213 _Lekraj Beedassy_, Dec 29 2007 %E A133213 Terms a(10)-a(16) added by _Jason G. Wurtzel_, Aug 18 2010 %E A133213 Further terms from _Harvey P. Dale_, Aug 21 2010