A108202 a(2n) = A007376(n); a(2n+1) = a(n).

0, 0, 1, 0, 2, 1, 3, 0, 4, 2, 5, 1, 6, 3, 7, 0, 8, 4, 9, 2, 1, 5, 0, 1, 1, 6, 1, 3, 1, 7, 2, 0, 1, 8, 3, 4, 1, 9, 4, 2, 1, 1, 5, 5, 1, 0, 6, 1, 1, 1, 7, 6, 1, 1, 8, 3, 1, 1, 9, 7, 2, 2, 0, 0, 2, 1, 1, 8, 2, 3, 2, 4, 2, 1, 3, 9, 2, 4, 4, 2, 2, 1, 5, 1, 2, 5, 6, 5, 2, 1, 7, 0, 2, 6, 8, 1, 2, 1, 9, 1, 3, 7, 0, 6, 3

Offset: 0

Author

Juliette Bruyndonckx and Alexandre Wajnberg, Jun 15 2005

Keywords

• base
• easy
• nonn

Comments

A sequence, S, consisting of the natural counting digits (A007376) interleaved with S.

Fractal sequence (Kimberling-type) based upon the counting digits.

Similar to but different from A025480 - N. J. A. Sloane, Nov 26 2020.

Crossrefs

First differs from A025480 at a(20).

Even bisection: A007376.

Cf. A003602.

Formula

a(n) = A007376(A025480(n)). - Kevin Ryde, Nov 21 2020

Extensions

More terms from Joshua Zucker, May 18 2006

Name made more explicit by Peter Munn, Nov 20 2020