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
KEYWORD
nonn,easy
AUTHOR
STATUS
approved