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Search: id:A063738
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| A063738 |
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Numbers n such that sum of digits of n is equal to the product of the digits of the sum of the prime factors of n, counted with multiplicity. |
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+0
1
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| 2, 3, 4, 5, 7, 27, 46, 52, 93, 117, 121, 143, 170, 174, 187, 228, 235, 240, 242, 250, 259, 341, 408, 451, 504, 512, 671, 682, 684, 720, 754, 759, 781, 810, 867, 888, 1017, 1120, 1143, 1155, 1173, 1247, 1272, 1276, 1357, 1362, 1377, 1449, 1456, 1524, 1537, 1564
(list; graph; listen)
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OFFSET
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1,1
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LINKS
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Matthew M. Conroy, Home page (listed instead of email address)
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EXAMPLE
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27: 2+7=9, 27= 3 * 3 * 3, 3+3+3=9; 170: 170=2*5*17, 1+7+0=8, 2+5+17=24, 2*4=8.
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CROSSREFS
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Sequence in context: A048659 A065774 A048459 this_sequence A063737 A135709 A028980
Adjacent sequences: A063735 A063736 A063737 this_sequence A063739 A063740 A063741
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KEYWORD
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easy,base,nonn
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AUTHOR
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Felice Russo (felice.russo(AT)katamail.com), Aug 13 2001
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EXTENSIONS
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Better description and more terms from Matthew M. Conroy, Aug 14 2001
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