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a(n) = n OR 5n, where OR is bitwise OR.
7

%I #5 Aug 02 2015 12:51:50

%S 0,5,10,15,20,29,30,39,40,45,58,63,60,77,78,79,80,85,90,95,116,125,

%T 126,119,120,125,154,159,156,157,158,159,160,165,170,175,180,189,190,

%U 231,232,237,250,255,252,237,238,239,240,245,250,255,308,317,318,311,312

%N a(n) = n OR 5n, where OR is bitwise OR.

%t f[n_] := BitOr[n, 5n]; Array[f, 57, 0] (* _Robert G. Wilson v_, Jun 28 2010 *)

%Y Cf. A163617, A178890, A178891, A178893, A178894, A178895, A178896, A178897.

%K nonn

%O 0,2

%A _Dmitry Kamenetsky_, Jun 21 2010

%E More terms from _Robert G. Wilson v_, Jun 28 2010