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 A333014 #13 Mar 06 2020 04:03:23 %S A333014 13352,18877,45397,49052,52027,53727,62652,64182,73152,74977,76677, %T A333014 79327,80671,85177,87972,88577,90702,91652,93302,96669,98827,101752, %U A333014 106036,106822,109227,109487,116117,118477,125347,133267,135786,138087,138802,140852,141532,144747,145302,145641,147274,148077,148927 %N A333014 Numbers which can written in exactly four ways as a sum of two distinct nonzero pentagonal numbers. %e A333014 13352 = P(52) + P(79) = P(29) + P(90) = P(17) + P(93) = P(10) + P(94), where P(n) is the n-th pentagonal number A000326. %o A333014 (PARI) is(k) = sum(i=1, sqrt(1+12*k)\6, sqrt(1+24*k+12*i-36*i*i)%6==5) == 4; \\ _Jinyuan Wang_, Mar 06 2020 %Y A333014 Cf. A000326, A332988, A332989, A333011, A333012, A333013. %K A333014 nonn %O A333014 1,1 %A A333014 _Olivier Gérard_, Mar 05 2020