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A118731 Numbers n such that 2^n has odd digit sum. 2
0, 4, 5, 7, 8, 10, 12, 16, 18, 19, 20, 22, 23, 24, 25, 27, 28, 29, 30, 31, 34, 35, 38, 39, 40, 48, 49, 52, 53, 56, 59, 62, 63, 66, 68, 69, 72, 75, 81, 87, 88, 89, 92, 93, 94, 96, 97, 99, 100, 101, 104, 105, 108, 109, 110, 111, 114, 118, 119, 121, 125, 127, 131, 132, 133 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..65.

MATHEMATICA

Select[Range[0, 133], Mod[ Plus @@ IntegerDigits[2^# ], 2] == 1 &] (* Ray Chandler, Jun 10 2006 *)

CROSSREFS

Cf. A118732, A118735, A076203.

Sequence in context: A225387 A037259 A219115 * A076203 A153327 A189707

Adjacent sequences:  A118728 A118729 A118730 * A118732 A118733 A118734

KEYWORD

base,nonn

AUTHOR

Zak Seidov, May 22 2006

STATUS

approved

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Last modified September 24 13:08 EDT 2021. Contains 347642 sequences. (Running on oeis4.)