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 A052348 #12 Aug 21 2016 12:53:56 %S A052348 0,6,81,276,1056,1381,6906,17956,34531,40056,200281,520731,1001406, %T A052348 1482081,7410406,19267056,37052031,60765331,303826656,789949306, %U A052348 1519133281,3220562556,13429138206,16102812781,41867313231,80514063906,196454315931,711744324931 %N A052348 Indices of A052343 (ways to write n as sum of two triangular numbers) where record values are reached. %H A052348 Kenneth Korbin, <a href="http://www.jstor.org/stable/2687550">Problem 665</a>, The College Mathematics Journal Vol. 30 No. 5, Nov. 1999. %e A052348 a(2) = 6 because 6 = 6 + 0 = 3 + 3. a(3) = 81 because 81 = 3 + 78 = 15 + 66 = 36 + 55. %Y A052348 Probably differs from A053587 only at n=1, 2, 4. %Y A052348 Cf. A000217, A052343, A052344, A052345, A052346, A052347. %K A052348 nonn %O A052348 1,2 %A A052348 _Christian G. Bower_, Jan 23 2000 %E A052348 a(23)-a(26) from _Donovan Johnson_, May 24 2009 %E A052348 a(27)-a(28) from _Donovan Johnson_, Mar 20 2013