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A191696
a(n) = floor((5^n)/(3^n + 2^n)).
2
1, 1, 3, 6, 11, 19, 33, 57, 96, 162, 272, 455, 761, 1271, 2121, 3539, 5901, 9839, 16403, 27342, 45576, 75965, 126614, 211029, 351723, 586213, 977031, 1628395, 2714003, 4523350, 7538930, 12564898, 20941513, 34902540, 58170920, 96951556, 161585952, 269309948
OFFSET
1,3
LINKS
FORMULA
a(n) = (5/3)^n - (10/9)^n + O(1). - Charles R Greathouse IV, Mar 14 2022
MATHEMATICA
f[n_] := Floor[(5^n)(3^n+2^n)]
Table[f[n], {n, 1, 40}] (* A191696 *)
PROG
(Magma) [Floor((5^n)/(3^n+2^n)): n in [1..40] ]; // Vincenzo Librandi, Sep 10 2011
(PARI) a(n)=5^n\(3^n+2^n) \\ Charles R Greathouse IV, Mar 14 2022
CROSSREFS
Cf. A191695.
Sequence in context: A179006 A281573 A262987 * A252479 A320850 A180086
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Jun 11 2011
STATUS
approved