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A177097 a(n) = 6*(10^n-5). 0
30, 570, 5970, 59970, 599970, 5999970, 59999970, 599999970, 5999999970, 59999999970, 599999999970, 5999999999970, 59999999999970, 599999999999970, 5999999999999970, 59999999999999970, 599999999999999970 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Apparently 30 times the entries of A067272. - R. J. Mathar, Aug 24 2011
LINKS
FORMULA
G.f.: 30*x*(1+8*x) / ( (10*x-1)*(x-1) ). - R. J. Mathar, Aug 24 2011
a(1)=30, a(2)=570, a(n)=11*a(n-1)-10*a(n-2). [Harvey P. Dale, Oct 10 2011]
MATHEMATICA
Join[{30, 570}, FromDigits/@(Join[{5}, #, {7, 0}]&/@Table[PadLeft[{}, n, 9], {n, 20}])] (* or *) LinearRecurrence[{11, -10}, {30, 570}, 20] (* Harvey P. Dale, Oct 10 2011 *)
CROSSREFS
Cf. A067272.
Sequence in context: A285168 A028200 A028181 * A028174 A028149 A028172
KEYWORD
nonn,easy
AUTHOR
STATUS
approved

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Last modified April 18 03:01 EDT 2024. Contains 371767 sequences. (Running on oeis4.)