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A067484 Powers of 6 with initial digit 6. 12
6, 60466176, 609359740010496, 6140942214464815497216, 61886548790943213277031694336, 623673825204293256669089197883129856, 6285195213566005335561053533150026217291776 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

The geometric progression formula a(n)=10077696*a(n-1) does NOT hold if n=20, 40, 59, 79, 98, etc. - R. J. Mathar, Jun 24 2009

LINKS

Table of n, a(n) for n=0..6.

Tanya Khovanova, Non Recursions

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: # R. J. Mathar, Jun 24 2009

CROSSREFS

Cf. A067480, A067481, A067482, A067483.

Sequence in context: A116272 A273723 A182792 * A193150 A182793 A058431

Adjacent sequences:  A067481 A067482 A067483 * A067485 A067486 A067487

KEYWORD

base,easy,nonn

AUTHOR

Amarnath Murthy, Feb 09 2002

EXTENSIONS

More terms from Benoit Cloitre, Feb 22 2002

STATUS

approved

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Last modified September 25 18:20 EDT 2017. Contains 292499 sequences.