OFFSET
0,1
COMMENTS
Sum of n-th powers of divisors of 17.
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..200
Index entries for linear recurrences with constant coefficients, signature (18,-17).
FORMULA
a(n) = A001026(n) + 1.
G.f.: 1/(1-x) + 1/(1-17*x).
E.g.f.: exp(x) + exp(17*x).
a(n) = 18*a(n-1) - 17*a(n-2) with a(0) = 2, a(1) = 18.
MATHEMATICA
17^Range[0, 20]+1 (* Harvey P. Dale, Jul 19 2019 *)
CROSSREFS
Cf. A001026.
KEYWORD
nonn,easy
AUTHOR
Philippe Deléham, Apr 05 2013
STATUS
approved