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 A178402 #3 Mar 30 2012 18:51:06 %S A178402 13,14,15,16,17,18,19,20,24,25,26,27,28,29,30,31,35,36,37,38,39,40,41, %T A178402 42,46,47,48,49,50,51,52,53,57,58,59,60,61,62,63,64,68,69,70,71,72,73, %U A178402 74,75,79,80,81,82,83,84,85,86,90,91,92,93,94,95,96,97,103,104,105,106 %N A178402 Numbers not containing the rounded up arithmetic mean of their digits, cf. A004427. %C A178402 A178401(a(n)) = 0; complement of A178403. %H A178402 R. Zumkeller, <a href="/A178402/b178402.txt">Table of n, a(n) for n = 1..10000</a> %K A178402 base,nonn %O A178402 1,1 %A A178402 _Reinhard Zumkeller_, May 27 2010