OFFSET
1,2
COMMENTS
For n = infinite: a(n)/1010^n = 1/1009 (Sequence A000930 reversed in decimal expansion).
LINKS
G. C. Greubel, Table of n, a(n) for n = 1..330
Index entries for linear recurrences with constant coefficients, signature (1011,-1010).
FORMULA
a(n) = a(n-1)* 1010 + 1
G.f.: x / ( (1010*x-1)*(x-1) ). - R. J. Mathar, Nov 03 2016
EXAMPLE
As overlapping Pascal triangles:
......1
....1.0.1.1
...1.0.2.1.1.1.1
..1.0.3.1.3.2.2.1.1.1
.1.0.4.1.6.3.5.3.3.2.1.1.1
1.0.5.2.0.5.1.6.8.5.4.3.2.1.1.1
MATHEMATICA
Accumulate[1010^Range[0, 20]] (* Harvey P. Dale, Oct 02 2014 *)
PROG
(PARI) for(n=1, 25, print1((1010^n-1)/1009, ", ")) \\ G. C. Greubel, May 02 2017
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Mark Dols, May 25 2010
EXTENSIONS
Corrected and extended by Harvey P. Dale, Oct 02 2014
STATUS
approved