A114546 A self-descriptive fractal sequence. Each element gives the length and first term of a finite arithmetic sequence. Replace each finite sequence with its length (or first term) and you recover the original infinite sequence.

4, 5, 6, 7, 5, 6, 7, 8, 9, 6, 7, 8, 9, 10, 11, 7, 8, 9, 10, 11, 12, 13, 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

Offset

4,1

Links

Table of n, a(n) for n=4..87.

Example

The first element is 4, describing the four-term arithmetic sequence 4, 5, 6, 7. The second element, 5, describes the five-term sequence 5, 6, 7, 8, 9.

Crossrefs

Cf. A114544, A114545, A114547.

Sequence in context: A163875 A244586 A334501 * A067471 A102691 A014553

Adjacent sequences: A114543 A114544 A114545 * A114547 A114548 A114549

Keyword

easy,nonn

Author

Kerry Mitchell, Dec 07 2005

Status

approved