A178891 a(n) = n OR 4n, where OR is bitwise OR.

0, 5, 10, 15, 20, 21, 30, 31, 40, 45, 42, 47, 60, 61, 62, 63, 80, 85, 90, 95, 84, 85, 94, 95, 120, 125, 122, 127, 124, 125, 126, 127, 160, 165, 170, 175, 180, 181, 190, 191, 168, 173, 170, 175, 188, 189, 190, 191, 240, 245, 250, 255, 244, 245, 254, 255, 248, 253

Offset

0,2

Comments

Perhaps this is a rearrangement of A115772?

Links

Table of n, a(n) for n=0..57.

Maple

read("transforms") ; for n from 0 to 120 do printf("%d, ", ORnos(n, 4*n) ) ; end do: # R. J. Mathar, Jun 26 2010

Mathematica

f[n_] := BitOr[n, 4n]; Array[f, 58, 0] (* Robert G. Wilson v, Jun 28 2010 *)

Crossrefs

Cf. A163617, A178890, A178892, A178893, A178894, A178895, A178896, A178897.

Sequence in context: A199860 A101889 A115772 * A044890 A313717 A313718

Adjacent sequences: A178888 A178889 A178890 * A178892 A178893 A178894

Keyword

nonn

Author

Dmitry Kamenetsky, Jun 21 2010

Extensions

More terms from R. J. Mathar and Robert G. Wilson v, Jun 26 2010

Status

approved