1,7

Sequence presents fractal patterns.

Table of n, a(n) for n=1..84.

Boris Gourevitch, Graph of a(n).

a(n)=sum(k=1, n, A083037(k))

a(2*A001109(n)-1)=A001109(n) - Benoit Cloitre, Dec 12 2003

Cf. A083035, A083036, A083037, A071992 (which presents similar fractal aspects).

Sequence in context: A253415 A227401 A131813 * A061008 A256720 A091988

Adjacent sequences: A083035 A083036 A083037 * A083039 A083040 A083041

nonn

Benoit Cloitre, Apr 17 2003

approved