A121845 A self-describing sequence: the length of each run of consecutive integers is given by the sequence itself. Always start a new run with the smallest unused integer so far.

1, 3, 4, 5, 2, 3, 4, 5, 7, 8, 9, 10, 11, 6, 7, 12, 13, 14, 16, 17, 18, 19, 15, 16, 17, 18, 19, 21, 22, 23, 24, 25, 26, 27, 20, 21, 22, 23, 24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 35, 36, 37, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 38

Offset

1,2

Links

Table of n, a(n) for n=1..73.

Example

...
Seq......1--3,4,5--2,3,4,5--7,8,9,10,11--6,7--
Run size:1....3.......4.........5.........2... (the sequence itself)
(the 3rd run starts with "2" which is the smallest unused integer so far. The 5th run starts with "6" for the same reason)

Crossrefs

Sequence in context: A009389 A091828 A305972 * A239639 A099816 A237273

Adjacent sequences: A121842 A121843 A121844 * A121846 A121847 A121848

Keyword

base,easy,nonn

Author

Eric Angelini, Aug 29 2006

Status

approved