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A161142
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Numbers which can be expressed as the product of numbers made of only fours.
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7
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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
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OFFSET
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1,2
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COMMENTS
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64 = 4 * 4 * 4; 1936 = 44 * 44; 1776 = 4 * 444.
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LINKS
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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