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 A224829 #7 Jul 21 2013 13:18:53 %S A224829 8,17,26,35,44,53,62,71,77,80,89,98,107,116,125,134,143,152,158,161, %T A224829 170,179,188,197,206,215,224,233,239,242,251,260,269,278,287,296,305, %U A224829 314,320,323,332,341,350,359,368,377,386,395,401,404,413,422,431,440 %N A224829 Numbers m, such that there is no solution m = x + y + 3*z, with triangular numbers x, y, z. %C A224829 A224823(a(n)) = 0; %C A224829 terms not of the form 9*k+8: 77,158,239,320,401,482,563,644,698,... . %H A224829 Reinhard Zumkeller, <a href="/A224829/b224829.txt">Table of n, a(n) for n = 1..1000</a> %o A224829 (Haskell) %o A224829 a224829 n = a224829_list !! n %o A224829 a224829_list = filter ((== 0) . a224823) [0..] %Y A224829 Cf. A017257 (subsequence), A000217. %K A224829 nonn %O A224829 1,1 %A A224829 _Reinhard Zumkeller_, Jul 21 2013