|
Search: id:A067484
|
|
|
| A067484 |
|
Powers of 6 with initial digit 6. |
|
+0
12
|
|
| 6, 60466176, 609359740010496, 6140942214464815497216, 61886548790943213277031694336, 623673825204293256669089197883129856, 6285195213566005335561053533150026217291776
(list; graph; listen)
|
|
|
OFFSET
|
0,1
|
|
|
COMMENT
|
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]
|
|
LINKS
|
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: [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 24 2009]
|
|
CROSSREFS
|
Cf. A067480, A067481, A067482, A067483.
Adjacent sequences: A067481 A067482 A067483 this_sequence A067485 A067486 A067487
Sequence in context: A072234 A115476 A116272 this_sequence A058431 A045518 A058457
|
|
KEYWORD
|
base,easy,nonn,new
|
|
AUTHOR
|
Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Feb 09 2002
|
|
EXTENSIONS
|
More terms from Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 22 2002
|
|
|
Search completed in 0.002 seconds
|
