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 A086711 #12 Dec 15 2017 17:36:32 %S A086711 11,17,31,251,1429,3041,16561,16927,53299,56897,89783,95089,213599, %T A086711 282977,345547,432587,592223,763457,906949,915799,1050449,1058389, %U A086711 1485017,1577341,1678399,1780253,1855549,2131687,2374289,2658259 %N A086711 Primes p such that A001414(p-1) = A001414(p+1), where A001414 = sum of primes dividing n (with repetition). %C A086711 Conjecture: sequence is infinite. %H A086711 Charles R Greathouse IV, <a href="/A086711/b086711.txt">Table of n, a(n) for n = 1..1280</a> %e A086711 a(3)=31 because it is prime and 30=2*3*5, 32=2^5 and 2+3+5 = 2+2+2+2+2 = 10. %Y A086711 Cf. A001414, A190680. %K A086711 nonn %O A086711 1,1 %A A086711 _Jason Earls_, Jul 28 2003