Search: id:A119257
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%I A119257
%S A119257 1,2,3,4,5,6,7,10,9,8,11,12,13,16,15,14,17,18,19,22,21,20,23,28,27,26,
%T A119257 25,24,29,30,31,36,35,34,33,32,37,40,39,38,41,42,43,46,45,44,47,52,51,
%U A119257 50,49,48,53,58,57,56,55,54,59,60,61,66,65,64,63,62,67,70,69,68,71,72
%N A119257 A permutation of the positive integers made by reversing the order of 
               the composites within each run of composites (1 and primes are left 
               alone).
%H A119257 Leroy Quet, <a href="http://www.prism-of-spirals.net/">Home Page</a> 
               (listed in lieu of email address)
%e A119257 The run of composites (24,25,26,27,28) becomes (28,27,26,25,24).
%o A119257 (PARI) {m=73;print1(1,",");n=2;while(n<=m, while(isprime(n),print1(n,
               ",");n++);k=n;while(!isprime(n),n++);forstep(a=n-1,k,-1,print1(a,
               ",")))} - (Klaus Brockhaus, Aug 16 2006)
%Y A119257 Sequence in context: A029804 A084690 A072794 this_sequence A102455 A073678 
               A031981
%Y A119257 Adjacent sequences: A119254 A119255 A119256 this_sequence A119258 A119259 
               A119260
%K A119257 nonn
%O A119257 1,2
%A A119257 Leroy Quet Jul 23 2006
%E A119257 More terms from Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Aug 
               16 2006

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