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 A178894 #13 Dec 27 2016 22:44:17 %S A178894 0,7,14,23,28,39,46,55,56,63,78,79,92,95,110,111,112,119,126,151,156, %T A178894 151,158,183,184,191,190,191,220,223,222,223,224,231,238,247,252,295, %U A178894 302,311,312,319,302,303,316,319,366,367,368,375,382,375,380,375,382 %N A178894 a(n) = n OR 7n, where OR is bitwise OR. %C A178894 From _Robert Israel_, Dec 27 2016: (Start) %C A178894 7*n <= a(n) < 8*n. %C A178894 a(n) = 7*n if and only if n is in A048715. %C A178894 It appears that a(n) = 8*n-1 if and only if n = (4*8^j+2*8^k+3)/7 for some j and k. (End) %H A178894 Robert Israel, <a href="/A178894/b178894.txt">Table of n, a(n) for n = 0..10000</a> %p A178894 seq(Bits:-Or(n,7*n), n=0..100); # _Robert Israel_, Dec 27 2016 %t A178894 f[n_] := BitOr[n, 7n]; Array[f, 55, 0] (* _Robert G. Wilson v_, Jun 28 2010 *) %Y A178894 Cf. A048715, A163617, A178890, A178891, A178892, A178893, A178895, A178896, A178897. %K A178894 nonn,look %O A178894 0,2 %A A178894 _Dmitry Kamenetsky_, Jun 21 2010 %E A178894 More terms from _Robert G. Wilson v_, Jun 28 2010