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Search: id:A078235
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| A078235 |
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a(1) = 7, a(n+1) = smallest multiple of a(n) using only prime digits(2,3,5,7). |
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+0
4
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| 7, 35, 525, 5775, 225225, 27252225, 73553755275, 52377555577572225, 755322332227355227335375375
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Sequence is infinite - see Comments in A078233. - Fung Cheok Yin (cheokyin_restart(AT)yahoo.com.hk), Sep 02 2006
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CROSSREFS
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Cf. A078232, A078233, A078234, A078236.
Sequence in context: A165505 A165639 A073109 this_sequence A028389 A041603 A018199
Adjacent sequences: A078232 A078233 A078234 this_sequence A078236 A078237 A078238
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KEYWORD
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base,more,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 23 2002
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EXTENSIONS
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More terms from Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Jan 06 2003
a(8) from Ray G. Opao (1260(AT)email.com), Mar 30 2005
a(9) from Robert Gerbicz (robert.gerbicz(AT)gmail.com), May 09 2008
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