



56, 776, 7976, 79976, 799976, 7999976, 79999976, 799999976, 7999999976, 79999999976, 799999999976, 7999999999976, 79999999999976, 799999999999976, 7999999999999976, 79999999999999976, 799999999999999976
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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

G.f.: 8*x*(7 + 20*x)/((1  x)*(1  10*x)).  Vincenzo Librandi, Aug 23 2014
a(n) = 11*a(n1)  10*a(n2).  Vincenzo Librandi, Aug 23 2014


MATHEMATICA

Table[8 (10^n  3), {n, 20}] (* or *) CoefficientList[Series[8 (7 + 20 x)/((1  x) (1  10 x)), {x, 0, 20}], x] (* Vincenzo Librandi, Aug 23 2014 *)
LinearRecurrence[{11, 10}, {56, 776}, 20] (* Harvey P. Dale, Sep 26 2018 *)


PROG

(Magma) [8*(10^n3): n in [1..20]]; // Vincenzo Librandi, Aug 23 2014


CROSSREFS

Sequence in context: A201098 A190419 A105940 * A227059 A285155 A278197
Adjacent sequences: A175599 A175600 A175601 * A175603 A175604 A175605


KEYWORD

nonn


AUTHOR

Vincenzo Librandi


STATUS

approved



