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Search: id:A072940
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| A072940 |
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Integers which have more than one coprime factorization into nonprime powers which sum to the same number. |
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+0
1
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| 30030, 43890, 53130, 60060, 72930, 82110, 90090, 102102, 103740
(list; graph; listen)
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OFFSET
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0,1
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EXAMPLE
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The term 30030 is in the list since 30030 = 65*22*21 = 39*55*14 and 65+22+21 = 108 = 39+55+14. The term 53130 = 15*22*161 = 6*77*115 (as well as 15*77*36 and 55*69*14) and 15+22+161 = 198 = 6+77+115 (and 15+77+36 = 55 + 69+ 14 = 138).
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CROSSREFS
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Sequence in context: A074969 A066765 A067885 this_sequence A147573 A046324 A138206
Adjacent sequences: A072937 A072938 A072939 this_sequence A072941 A072942 A072943
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KEYWORD
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easy,nonn
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AUTHOR
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Mike Domaratzki (mdomaratzki(AT)alumni.uwaterloo.ca), Aug 12 2002
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