

A110807


n times largest ndigit number.


4



0, 9, 198, 2997, 39996, 499995, 5999994, 69999993, 799999992, 8999999991, 99999999990, 1099999999989, 11999999999988, 129999999999987, 1399999999999986, 14999999999999985, 159999999999999984
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OFFSET

0,2


LINKS



FORMULA

G.f.: 9*x*(1+10*x^2) / ( (10*x1)^2*(x1)^2 ).  R. J. Mathar, Dec 04 2016


EXAMPLE

a(3) = 3*999 = 2997.


MATHEMATICA

LinearRecurrence[{22, 141, 220, 100}, {0, 9, 198, 2997, 39996}, 20] (* Harvey P. Dale, Sep 22 2016 *)


PROG

(PARI) for(n=1, 25, print1(n*(10^n1), ", ")) \\ G. C. Greubel, Oct 19 2017
(Magma) [n*(10^n1): n in [1..25]]; // G. C. Greubel, Oct 19 2017


CROSSREFS



KEYWORD

base,easy,nonn


AUTHOR



STATUS

approved



