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 A062338 #17 Sep 08 2022 08:45:03 %S A062338 13,17,31,53,71,79,97,103,107,211,233,251,277,349,367,389,431,439,457, %T A062338 479,503,521,547,569,587,619,659,673,677,691,701,709,727,839,853,857, %U A062338 907,929,947,983,1021,1061,1069,1087,1151,1201,1223,1249,1289,1429 %N A062338 Primes whose sum of digits is a multiple of 4. %H A062338 Robert Israel, <a href="/A062338/b062338.txt">Table of n, a(n) for n = 1..10000</a> %e A062338 349 is a prime with sum of digits =16=4*4, hence belongs to the sequence. %p A062338 filter:= x -> (convert(convert(x,base,10),`+`) mod 4 = 0) and isprime(x); %p A062338 A062338:= select(filter, [seq(2*i+1,i=0..1000)]); # _Robert Israel_, Apr 20 2014 %o A062338 (Magma) [ p: p in PrimesUpTo(10000) | &+Intseq(p) mod 4 eq 0 ]; /* _Vincenzo Librandi_, Apr 02 2011 */ %o A062338 (PARI) is(n)=isprime(n) && sumdigits(n)%4==0 \\ _Charles R Greathouse IV_, Mar 09 2022 %Y A062338 Subsequence of A119449. %Y A062338 Cf. A062336, A062337. %K A062338 nonn,base,easy %O A062338 1,1 %A A062338 _Amarnath Murthy_, Jun 21 2001 %E A062338 Corrected and extended by Larry Reeves (larryr(AT)acm.org), Jul 06 2001