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A105799 Self-describing sequence: 2 prime numbers, then 3 composites, then 4 primes, then 6 composites, then 8 primes, then 11 composites, then 13 primes, etc. 0
2, 3, 4, 6, 8, 11, 13, 17, 19, 20, 21, 22, 24, 25, 26, 29, 31, 37, 41, 43, 47, 53, 59, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 150, 152, 153, 154, 155, 156, 158 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

Table of n, a(n) for n=2..64.

EXAMPLE

2 3 4 6 8 11 13 17 19 20 21 22 24 25 26 29 31 37 41 43 47 53 59 ...

^ ^ - - - ^^ ^^ ^^ ^^ -- -- -- -- -- -- ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^

.2....3........4..............6....................8....

pri..comp....primes.......composites.............primes

CROSSREFS

Sequence in context: A080329 A002858 A211522 * A102463 A242110 A056829

Adjacent sequences:  A105796 A105797 A105798 * A105800 A105801 A105802

KEYWORD

base,easy,nonn

AUTHOR

Eric Angelini, May 05 2005

STATUS

approved

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Last modified October 16 11:51 EDT 2019. Contains 328056 sequences. (Running on oeis4.)