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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

%I #2 Mar 31 2012 13:46:51

%S 2,3,4,6,8,11,13,17,19,20,21,22,24,25,26,29,31,37,41,43,47,53,59,60,

%T 62,63,64,65,66,68,69,70,72,74,79,83,89,97,101,103,107,109,113,127,

%U 131,137,139,140,141,142,143,144,145,146,147,148,150,152,153,154,155,156,158

%N 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.

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

%e ^ ^ - - - ^^ ^^ ^^ ^^ -- -- -- -- -- -- ^^ ^^ ^^ ^^ ^^ ^^ ^^ ^^

%e .2....3........4..............6....................8....

%e pri..comp....primes.......composites.............primes

%K base,easy,nonn

%O 2,1

%A _Eric Angelini_, May 05 2005

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Last modified April 25 10:34 EDT 2024. Contains 371967 sequences. (Running on oeis4.)