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 A178892 #5 Aug 02 2015 12:51:50 %S A178892 0,5,10,15,20,29,30,39,40,45,58,63,60,77,78,79,80,85,90,95,116,125, %T A178892 126,119,120,125,154,159,156,157,158,159,160,165,170,175,180,189,190, %U A178892 231,232,237,250,255,252,237,238,239,240,245,250,255,308,317,318,311,312 %N A178892 a(n) = n OR 5n, where OR is bitwise OR. %t A178892 f[n_] := BitOr[n, 5n]; Array[f, 57, 0] (* _Robert G. Wilson v_, Jun 28 2010 *) %Y A178892 Cf. A163617, A178890, A178891, A178893, A178894, A178895, A178896, A178897. %K A178892 nonn %O A178892 0,2 %A A178892 _Dmitry Kamenetsky_, Jun 21 2010 %E A178892 More terms from _Robert G. Wilson v_, Jun 28 2010