A161142 - OEIS

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A161142

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

1, 4, 16, 44, 64, 176, 256, 444, 704, 1024, 1776, 1936, 2816, 4096, 4444, 7104, 7744, 11264, 16384, 17776, 19536, 28416, 30976, 44444, 45056, 65536, 71104, 78144, 85184, 113664, 123904, 177776, 180224, 195536, 197136, 262144, 284416, 312576

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

OFFSET

1,2

COMMENTS

64 = 4 * 4 * 4; 1936 = 44 * 44; 1776 = 4 * 444.

LINKS

Table of n, a(n) for n=1..38.

CROSSREFS

Cf. A084034, A161140, A161141, A161143, A161144, A161145, A161146, A161147.

Sequence in context: A034131 A183536 A320100 * A259013 A212960 A217873

Adjacent sequences: A161139 A161140 A161141 * A161143 A161144 A161145

KEYWORD