OFFSET
1,1
COMMENTS
Since 3*tau^(-3) < 1 the number of nonzero terms in the sum is finite. - Giovanni Resta, Jul 08 2019
LINKS
C. Kimberling, Problem 10520, Amer. Math. Mon. 103 (1996) p. 347.
FORMULA
a(n) = Sum_{k=-2..(n-1)} floor(3*tau^k). - Giovanni Resta, Jul 08 2019
MATHEMATICA
a[n_] := Sum[Floor[3 GoldenRatio^k], {k, -2, n-1}]; Array[a, 37] (* Giovanni Resta, Jul 08 2019 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
Name edited by Michel Marcus, Jul 06 2019
a(27)-a(37) from Giovanni Resta, Jul 08 2019
STATUS
approved