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 A200259 #15 Mar 20 2023 13:01:52 %S A200259 1,5,6,7,8,11,12,16,17,20,21,22,25,26,27,28,29,31,35,38,39,42,47,51, %T A200259 52,54,55,58,59,62,63,69,70,73,76,77,81,83,84,85,88,92,94,95,96,97,98, %U A200259 99,100,101,103,104,107,112,113,114,115,119,120,122,123,125 %N A200259 Numbers k such that k-th prime has an even digit sum. %H A200259 T. D. Noe, <a href="/A200259/b200259.txt">Table of n, a(n) for n = 1..10000</a> %t A200259 Select[Range[1000], EvenQ[Total[IntegerDigits[Prime[#]]]] &] (* _T. D. Noe_, Nov 21 2011 *) %o A200259 (Magma) [ n: n in [1..169] | IsEven(&+Intseq(NthPrime(n)))]; // _Bruno Berselli_, Nov 15 2011 %Y A200259 Cf. A119449, A200260. %K A200259 nonn,base %O A200259 1,2 %A A200259 _N. J. A. Sloane_, Nov 15 2011