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A253212
a(n) = 9^n + 8.
2
9, 17, 89, 737, 6569, 59057, 531449, 4782977, 43046729, 387420497, 3486784409, 31381059617, 282429536489, 2541865828337, 22876792454969, 205891132094657, 1853020188851849, 16677181699666577, 150094635296999129, 1350851717672992097, 12157665459056928809
OFFSET
0,1
COMMENTS
Subsequence of A226832.
FORMULA
G.f.: (9 - 73*x)/((1 - x)*(1 - 9*x)).
a(n) = 10*a(n-1) - 9*a(n-2) for n>1.
MATHEMATICA
Table[9^n + 8, {n, 0, 40}]
LinearRecurrence[{10, -9}, {9, 17}, 30] (* Harvey P. Dale, Jul 02 2021 *)
PROG
(Magma) [9^n+8: n in [0..30]];
CROSSREFS
Cf. similar sequences listed in A253208.
Sequence in context: A116526 A197396 A015443 * A217965 A121442 A357567
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Dec 30 2014
STATUS
approved