Search: id:A122462
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%I A122462
%S A122462 2,2,3,3,3,2,5,5,3,2,2,7,7,3,2,11,11,3,3,2,2,13,13,3,2,17,17,3,2,5,5,7,
%T A122462 2,19,19,3,5,2,23,23,3,2,2,2,2,11,5,2,29,29,3,7,7,2,31,31,3,2,13,5,2,2,
%U A122462 37,37,3,3,3,2,2,41,41,3,3,7,11,2,43,43,3,2,2,47,47,3,2,2,5,5,5,2,2,2
%N A122462 a(n) = gcd(b(n-1),b(n)), where b(i) = A122280(i).
%C A122462 Primes arising in A122280 as greatest common divisor.
%o A122462 (PARI) {m=100;z=2*m;w=vectorsmall(z);b=1;a=2;w[b]=1;w[a]=1;stop=0;n=3;
               while(!stop&&n<=m,j=1;while(j<=z&&(w[j]==1||!isprime(p=gcd(a,j))),
               j++);if(j>z,stop=1,print1(p,",");a=j;w[a]=1;n++))}
%Y A122462 Cf. A122280.
%Y A122462 Sequence in context: A014499 A055778 A106482 this_sequence A165024 A157639 
               A010096
%Y A122462 Adjacent sequences: A122459 A122460 A122461 this_sequence A122463 A122464 
               A122465
%K A122462 nonn
%O A122462 3,1
%A A122462 Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Sep 09 2006

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