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A048542
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Smallest oblong (promic) number containing exactly n 6's.
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10
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6, 3660, 66306, 666672, 16666806, 6066462656, 66686606406, 666692662656, 20666666069660, 666676608666642, 10666051666666662, 664566666660662640, 666626669666607656, 6666086666606866662, 616766666966468666660, 66636666164666636562656, 1536666668666666766166056
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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..17.
Eric Weisstein's World of Mathematics, Pronic Number
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CROSSREFS
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Cf. A048541, A002378.
Cf. A048530, A048532, A048534, A048536, A048538, A048540, A048544, A048546, A048548.
Sequence in context: A198625 A198653 A198660 * A140173 A158663 A110106
Adjacent sequences: A048539 A048540 A048541 * A048543 A048544 A048545
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KEYWORD
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nonn,base
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AUTHOR
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Patrick De Geest, May 15 1999
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EXTENSIONS
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a(14)-a(17) from Giovanni Resta, Oct 09 2019
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STATUS
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approved
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