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A246058
a(n) = (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
OFFSET
0,2
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
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Aug 13 2014
STATUS
approved