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A067484
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Powers of 6 with initial digit 6.
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12
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6, 60466176, 609359740010496, 6140942214464815497216, 61886548790943213277031694336, 623673825204293256669089197883129856, 6285195213566005335561053533150026217291776
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| The geometric progression formula a(n)=10077696*a(n-1) does NOT hold if n=20, 40, 59, 79, 98, etc. [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 24 2009]
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LINKS
| Tanya Khovanova, Non Recursions
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MAPLE
| A067484 := proc(n) local p6, p, a ; if n = 0 then 6; else p6 := procname(n-1) ; ifactors(p6)[2] ; p := op(2, op(1, %)) ; for a from p+1 do p6 := 6^a ; convert(%, base, 10) ; if op(-1, %) = 6 then RETURN(p6) ; fi; od: fi; end: [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 24 2009]
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CROSSREFS
| Cf. A067480, A067481, A067482, A067483.
Sequence in context: A172876 A116272 A182792 * A193150 A182793 A058431
Adjacent sequences: A067481 A067482 A067483 * A067485 A067486 A067487
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KEYWORD
| base,easy,nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Feb 09 2002
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EXTENSIONS
| More terms from Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 22 2002
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