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A246058 (16*10^n-7)/9. 2
1, 17, 177, 1777, 17777, 177777, 1777777, 17777777, 177777777, 1777777777, 17777777777, 177777777777, 1777777777777, 17777777777777, 177777777777777, 1777777777777777, 17777777777777777, 177777777777777777, 1777777777777777777, 17777777777777777777 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..100

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

FORMULA

G.f.: (1+6*x)/((1-x)*(1-10*x)).

a(n) = 11*a(n-1) - 10*a(n-2).

MATHEMATICA

Table[(16 10^n - 7)/9, {n, 0, 20}]

PROG

(MAGMA) [(16*10^n-7)/9: n in [0..20]]

CROSSREFS

Cf. similar sequences listed in A246057.

Sequence in context: A119343 A164744 A228214 * A121793 A042985 A125405

Adjacent sequences:  A246055 A246056 A246057 * A246059 A246060 A246061

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Aug 13 2014

STATUS

approved

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Last modified June 2 10:54 EDT 2020. Contains 334771 sequences. (Running on oeis4.)