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 A115260 #5 Mar 13 2015 00:18:21 %S A115260 2,3,5,7,2,7,2,3,3,2,5,2,5,2,2,3,5,7,3,3,2,2,3,3,7,5,2,3,7,2,2,5,2,5, %T A115260 3,3,5,7,7,5,2,5,13,3,2,3,5,3,2,7,2,5,5,7,13,3,5,2,2,7,13,3,2,3,5,17, %U A115260 7,13,5,3,7,17,13,7,3,7,7,2,3,5,5,2,2,7,3,3,7,2,3,7,2,3,7,2,5,5,3,2,7,3,5,7 %N A115260 Prime numbers in the sequence of the absolute difference of the sum of digits in odd positions and the sum of digits in even positions of prime numbers. %C A115260 Primes in the sequence A115259. %e A115260 a(37) = 3 because 37th prime = 157, (7+1) - 5 = 3, 3 is prime. %p A115260 select(isprime,[seq(abs(sum(convert(ithprime(a),base,10)[2*i],i=1..nops(convert (ithprime(a),base,10))/2)-sum(convert(ithprime(a),base,10)[2*i+1],i=0..(nops (convert(ithprime(a),base,10))-1)/2)),a=1..N)]); %Y A115260 Cf. A040997, A005017, A063792, A087593, A042939, A041000, A040164, A115259, A115261. %K A115260 base,nonn %O A115260 1,1 %A A115260 _Giorgio Balzarotti_, _Paolo P. Lava_, Jan 20 2006