A074265 Values of Kolakoski sequence A000002 at positions n = 0 mod 5.

1, 1, 2, 1, 1, 2, 2, 1, 2, 2, 1, 2, 2, 1, 2, 2, 1, 2, 1, 2, 2, 2, 1, 2, 1, 1, 2, 1, 2, 2, 1, 1, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1, 1, 2, 1, 1, 2, 2, 1, 2, 2, 1, 2, 1, 2, 2, 2, 1, 1, 2, 1, 2, 1, 1, 2, 2, 2, 1, 2, 1, 2, 2, 2, 1, 2, 1

Offset

1,3

Links

Nathaniel Johnston, Table of n, a(n) for n = 1..10000

Formula

a(n) = A000002(5n).

Example

The Kolakoski sequence begins 1,2,2,1,1,2,1,2,2,1,2,2,1,1,2,1,1,..., and the values at positions 5, 10, 15 are 1, 1, 2, so this sequence begins 1, 1, 2, ...

Crossrefs

Sequence in context: A025142 A245936 A199596 * A254688 A002636 A353656

Adjacent sequences: A074262 A074263 A074264 * A074266 A074267 A074268

Keyword

nonn,easy

Author

Jon Perry, Sep 20 2002

Extensions

Extended and offset changed by Nathaniel Johnston, May 02 2011

Status

approved