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A161140 Numbers which can be expressed as the product of numbers made of only twos. 7
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: A254062 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

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Last modified February 18 02:09 EST 2018. Contains 299297 sequences. (Running on oeis4.)