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%I #11 Mar 06 2016 04:37:00
%S 2,3,4,5,6,7,9,11,13,15,18,19,21,25,27,31,33,34,36,39,42,43,45,48,49,
%T 50,51,53,55,58,60,61,63,66,69,71,72,73,75,76,81,82,84,85,87,89,90,91,
%U 94,96,99,103,105,106,109,111,113,114,115,117
%N a(n) = least positive integer > a(n-1) and not a(i)*a(j)+2 for 1<=i<j<=n.
%H Ivan Neretin, <a href="/A026445/b026445.txt">Table of n, a(n) for n = 1..1000</a>
%t a = {2, 3}; used = {a[[1]]*a[[2]] + 2}; Do[k = a[[-1]] + 1; While[MemberQ[used, k], k++]; used = Union[used, k*a + 2]; AppendTo[a, k], {n, 3, 60}]; a (* _Ivan Neretin_, Mar 06 2016 *)
%Y Cf. A026443 and references therein.
%K nonn
%O 1,1
%A _Clark Kimberling_
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