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4, 9, 15, 20, 29, 38, 47, 56, 66, 76, 86, 95, 106, 117, 125, 135, 146, 156, 167, 177, 186, 196, 209, 219, 231, 241, 254, 267, 280, 292, 305, 316, 330, 343, 356, 368, 381, 396, 409, 423, 436, 450, 463, 476, 491, 503, 517, 530, 547, 561, 577, 593, 608, 625, 640
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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Table of n, a(n) for n=1..55.
Eric Weisstein's World of Mathematics, Highly Composite Number
A. Flammenkamp, First 1200 highly composite numbers
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FORMULA
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Partial sums of A112780. - Lekraj Beedassy, Sep 02 2006
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EXAMPLE
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a(1) = 4 since there are four highly composite numbers < 10^1 {1,2,4,6}.
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CROSSREFS
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Cf. A002182, A002183, A108602, A112778, A112779, A112780.
Sequence in context: A184931 A161436 A189459 * A166131 A122927 A078505
Adjacent sequences: A112778 A112779 A112780 * A112782 A112783 A112784
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KEYWORD
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nonn
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AUTHOR
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Ray Chandler, Nov 11 2005
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STATUS
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approved
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