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 A268757 #18 Mar 31 2016 13:51:26 %S A268757 16,4104,119824488,74213505639000,6123582409620312000 %N A268757 Unhappycab numbers: the smallest unhappy number that is the sum of two cubes of unhappy numbers in n different ways. %C A268757 a(6) <= 802780294845778147551744 = 9851898^3+92902278^3 = 27391106^3+92139262^3 = 52144168^3+87109808^3 = 56241696^3+85493352^3 = 58805572^3+84316316^3 = 72408488^3+75075088^3. %F A268757 a(n) >= A011541(n) for n > 0. It is conjectured that there is no equality. %e A268757 a(1) = 16 = 2^3+2^3; %e A268757 a(2) = 4104 = 2^3+16^3 = 9^3+15^3; %e A268757 a(3) = 119824488 = 11^3+493^3 = 90^3+492^3 = 346^3+428^3; %e A268757 a(4) = 74213505639000 = 5895^3+41985^3 = 20392^3+40358^3 = 20880^3+40230^3 = 32790^3+33900^3; %e A268757 a(5) = 6123582409620312000 = 193935^3+1828785^3 = 539195^3+1813765^3 = 1026460^3+1714760^3 = 1107120^3+1682940^3 = 1157590^3+1659770^3. %Y A268757 Cf. A011541, A031177, A268583. %K A268757 nonn,base,hard,more %O A268757 1,1 %A A268757 _Corinna Regina Böger_, Feb 14 2016