A161140 - OEIS

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A161140

Numbers which can be expressed as the product of numbers made of only twos.

1, 2, 4, 8, 16, 22, 32, 44, 64, 88, 128, 176, 222, 256, 352, 444, 484, 512, 704, 888, 968, 1024, 1408, 1776, 1936, 2048, 2222, 2816, 3552, 3872, 4096, 4444, 4884, 5632, 7104, 7744, 8192, 8888, 9768, 10648, 11264, 14208, 15488, 16384, 17776

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Table of n, a(n) for n=1..45.

EXAMPLE

1 is the empty product; 44 is in the list because 44 = 2 * 22, 484 is in the list because 484 = 22 * 22.

CROSSREFS

Cf. A084034, A161141, A161142, A161143, A161144, A161145, A161146, A161147.

Sequence in context: A341817 A230102 A063108 * A257350 A257165 A262224

Adjacent sequences: A161137 A161138 A161139 * A161141 A161142 A161143

KEYWORD

nonn,base

AUTHOR

Claudio Meller, Jun 03 2009

EXTENSIONS

1 added by N. J. A. Sloane, Dec 04 2017

STATUS

approved