RE : Self describing it's composite

Eric Angelini Eric.Angelini at kntv.be
Tue Mar 18 02:04:10 CET 2008


 
The similar seq self-describing it's composites begins :
 
2,3,4,5,6,7,8,11,12,13,14,17,18,19,20,23,29,31,32,37,38,...
 
Best,
E.

________________________________

De: Eric Angelini [mailto:Eric.Angelini at kntv.be]
Date: mar. 18/03/2008 01:44
À: seqfan at ext.jussieu.fr
Objet : Self describing it's primes




Hello SeqFans,

1,2,4,5,6,8,11,12,13,14,17,18,20,23,24,25,26,29,...

Read a(n) like this :

"Move a(n) steps to the right and you will bump into a prime"

a(n) is always the smallest unused non-prime, except when a(n) must be a prime; if so, a(n) is the smallest unused prime.

Could someone check this seq, calculate some more terms and submit them to the OEIS, if of interest?

Best,
E.

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