A114547 A self-descriptive fractal sequence. Each element gives the first term and length of a finite arithmetic sequence. Replace each finite sequence with its length (or first term) and you recover the original infinite sequence.

5, 6, 7, 8, 9, 6, 7, 8, 9, 10, 11, 7, 8, 9, 10, 11, 12, 13, 8, 9, 10, 11, 12, 13, 14, 15, 9, 10, 11, 12, 13, 14, 15, 16, 17, 6, 7, 8, 9, 10, 11, 7, 8, 9, 10, 11, 12, 13, 8, 9, 10, 11, 12, 13, 14, 15, 9, 10, 11, 12, 13, 14, 15, 16, 17, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 11, 12, 13

Offset

1,1

Links

Table of n, a(n) for n=1..78.

Example

The first element, 5, describes the five-term sequence 5, 6, 7, 8, 9. The second element, 6, describes the six-term sequence 6, 7, 8, 9, 10, 11.

Crossrefs

Sequence in context: A368126 A361472 A346172 * A217293 A201971 A169869

Adjacent sequences: A114544 A114545 A114546 * A114548 A114549 A114550

Keyword

easy,nonn

Author

Kerry Mitchell, Dec 07 2005

Status

approved