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A076896
a(1) = 1, a(n) = n-a(floor(2n/3)).
1
1, 1, 2, 3, 3, 3, 4, 5, 6, 7, 7, 7, 8, 8, 8, 9, 10, 11, 12, 12, 13, 14, 15, 15, 16, 16, 16, 17, 17, 18, 19, 19, 19, 20, 20, 21, 22, 22, 23, 24, 25, 25, 26, 27, 27, 28, 28, 29, 30, 31, 31, 32, 33, 33, 34, 34, 35, 36, 36, 36, 37, 37, 38, 39, 39, 39, 40, 41, 41, 42, 43, 43, 44, 44
OFFSET
1,3
LINKS
FORMULA
a(n) is asymptotic to (6/10)*n.
MATHEMATICA
a[1] = 1; a[n_] := a[n] = n - a[Floor[2*n/3]]; Array[a, 100] (* Amiram Eldar, May 09 2022 *)
PROG
(PARI) a(n)=if(n==0, 0, n-a(floor(2*n/3))); \\ Joerg Arndt, Apr 27 2013
CROSSREFS
Cf. A050292.
Sequence in context: A029069 A266341 A279521 * A275890 A029087 A177497
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Nov 26 2002
STATUS
approved