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A173764 (3*10^n+51)/9 for n>0. 2
9, 39, 339, 3339, 33339, 333339, 3333339, 33333339, 333333339, 3333333339, 33333333339, 333333333339, 3333333333339, 33333333333339, 333333333333339, 3333333333333339, 33333333333333339, 333333333333333339 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..100

Index entries for linear recurrences with constant coefficients, signature (11,-10).

FORMULA

a(n) = 10*a(n-1)-51 with n>0, a(0)=6.

G.f.: x*(9-60*x)/((1-x)*(1-10*x)). - Vincenzo Librandi, Jul 05 2012

a(n) = 11*a(n-1) -10*a(n-2). - Vincenzo Librandi, Jul 05 2012

MATHEMATICA

CoefficientList[Series[(9-60*x)/((1-x)*(1-10*x)), {x, 0, 30}], x] (* Vincenzo Librandi, Jul 05 2012

PROG

(MAGMA)[(3*10^n+51)/9: n in [1..20]]; // Vincenzo Librandi, Jul 05 2012

CROSSREFS

Sequence in context: A246065 A075210 A146187 * A331343 A002085 A076603

Adjacent sequences:  A173761 A173762 A173763 * A173765 A173766 A173767

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Feb 24 2010

STATUS

approved

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Last modified May 24 10:38 EDT 2022. Contains 354032 sequences. (Running on oeis4.)