1,4

Table of n, a(n) for n=1..76.

a(n)=(sqrt(2)-1)*n+o(n) (?)

(PARI) a(n)=if(n<2, 1, floor(n/2)-a(floor(n/2))+a(floor(n/2)-a(floor(n/2))))

Sequence in context: A156080 A334233 A271058 * A095186 A265340 A189631

Adjacent sequences: A107317 A107318 A107319 * A107321 A107322 A107323

nonn

Benoit Cloitre, May 21 2005

approved