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%I #8 Mar 06 2016 06:50:52
%S 2,3,5,6,7,9,11,14,15,17,18,21,22,23,24,27,29,30,35,36,37,38,39,41,45,
%T 47,48,50,51,54,55,57,59,60,62,63,65,66,69,71,77,78,81,84,86,87,89,90,
%U 91,93,95,99,101,102,104,105,107,110,111,114
%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="/A026455/b026455.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. A026453 and references therein.
%K nonn
%O 1,1
%A _Clark Kimberling_
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