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A048538 Smallest pronic number containing exactly n 4's. +0
2
42, 4422, 46440, 464442, 44642442, 144444342, 40447444340, 2344449414440, 42794944444440, 443448440044440, 24442434644444460, 455758444444444440 (list; graph; listen)
OFFSET

1,1

LINKS

Eric Weisstein's World of Mathematics, Pronic Number

CROSSREFS

Cf. A048537, A002378.

Sequence in context: A041841 A046198 A053875 this_sequence A102967 A091545 A101630

Adjacent sequences: A048535 A048536 A048537 this_sequence A048539 A048540 A048541

KEYWORD

nonn,base

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), May 15 1999.

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.


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