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Search: id:A014666
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| 1, 2, 4, 6, 10, 11, 17, 21, 27, 29, 39, 42, 54, 58, 63, 71, 87, 90, 108, 114, 121, 126
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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S. W. Golomb, personal communication, Svalbard, Norway, 7/97.
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FORMULA
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For n>1: # of positive integers u <= n(n-1) such that p^H_p(u)<=n for all p<=u, where H_p(u) = highest power of p dividing u.
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CROSSREFS
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Sequence in context: A086917 A004789 A027435 this_sequence A067852 A102025 A090127
Adjacent sequences: A014663 A014664 A014665 this_sequence A014667 A014668 A014669
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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