A046821 Number of 1's in binary expansion of 5n+1.

1, 2, 3, 1, 3, 3, 5, 2, 3, 4, 4, 3, 5, 2, 4, 3, 3, 4, 5, 2, 4, 4, 6, 4, 5, 6, 3, 2, 4, 3, 5, 4, 3, 4, 5, 3, 5, 5, 7, 3, 4, 5, 5, 4, 6, 4, 6, 5, 5, 6, 7, 1, 3, 3, 5, 3, 4, 5, 4, 3, 5, 4, 6, 5, 3, 4, 5, 3, 5, 5, 7, 4, 5, 6, 6, 5, 7, 3, 5, 4, 4, 5, 6, 3, 5, 5, 7, 5, 6, 7, 5, 4, 6

Offset

0,2

Links

Table of n, a(n) for n=0..92.

Mathematica

DigitCount[#, 2, 1]&/@(5*Range[0, 120]+1) (* Harvey P. Dale, Feb 25 2018 *)

Crossrefs

Sequence in context: A121062 A045831 A338988 * A239691 A265496 A238793

Adjacent sequences: A046818 A046819 A046820 * A046822 A046823 A046824

Keyword

nonn

Author

N. J. A. Sloane

Status

approved