A092106 Fractal mountains in base 3.

0, 1, 3, 2, 2, 3, 1, 0, 0, 1, 3, 6, 6, 7, 9, 8, 8, 9, 11, 14, 18, 19, 21, 24, 24, 25, 27, 26, 26, 27, 25, 24, 24, 21, 19, 18, 18, 19, 21, 20, 20, 21, 19, 18, 18, 19, 21, 24, 24, 25, 27, 26, 26, 27, 25, 24, 24, 21, 19, 18, 14, 11, 9, 8, 8, 9, 7, 6, 6, 3, 1, 0, 0, 1, 3, 2, 2, 3, 1, 0, 0, 1

Offset: 0

Author

Benoit Cloitre, Mar 29 2004

Keywords

• nonn

Comments

The graph of sequence presents fractal aspects.

Crossrefs

Cf. A005536 (fractal mountains in base 2).

Formula

a(n)=a(n, 3) where a(n, m)=sum(i=0, n, sum(k=0, i, (-1)^k*(floor(i/m^k)-m*floor(i/m^(k+1)))))