OFFSET
1,6
LINKS
Moussa Benoumhani, A Sequence of Binomial Coefficients Related to Lucas and Fibonacci Numbers, J. Integer Seqs., Vol. 6, 2003, Article 03.2.1.
FORMULA
a(n) = ceiling(1/10*(5*n-4-sqrt(5*n^2-4))).
MATHEMATICA
Table[Ceiling[1/10 (5 n - 4 - Sqrt[5 n^2 - 4])], {n, 1, 100}] (* Vincenzo Librandi, May 21 2015 *)
PROG
(PARI) vector(80, n, ceil(1/10*(5*n-4-sqrt(5*n^2-4)))) \\ Michel Marcus, May 20 2015
(Magma) [Ceiling(1/10*(5*n-4-Sqrt(5*n^2-4))): n in [1..100]]; // Vincenzo Librandi, May 21 2015
CROSSREFS
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Jul 28 2003
STATUS
approved