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%I #11 Jan 08 2022 12:15:06
%S 4,3,8,9,2,2,2,15,16,9,20,7,22,12,5,13,27,14,30,8,11,17,35,3,38,3,40,
%T 3,44,3,46,3,49,25,51,13,54,55,56,57,58,10,62,63,64,65,66,17,69,7,24,
%U 37,75,38,7,39,80,81,82,7,85,43,29,11,18,91,92,93,94,19,96,49,99,50,34,26,15,53,108
%N Numerator of (n-th composite/n).
%C Numerator of (A002808(n)/n).
%H Robert Israel, <a href="/A171527/b171527.txt">Table of n, a(n) for n = 1..10000</a>
%p compos:= remove(isprime, [$2..1300]):
%p seq(numer(compos[n]/n),n=1..1000); # _Robert Israel_, Nov 03 2020
%t Module[{nn=200,cmps,len},cmps=Select[Range[nn],CompositeQ];len= Length[ cmps];#[[1]]/#[[2]]&/@Thread[{cmps,Range[len]}]]//Numerator (* _Harvey P. Dale_, Jan 08 2022 *)
%o (PARI) lista(nn) = {compo = select(n->(! isprime(n) && (n != 1)), vector(nn, i, i)); for (i = 1, #compo, print1(numerator(compo[i]/i), ", "););} \\ _Michel Marcus_, Sep 11 2013
%Y Cf. A171528.
%K nonn,frac,look
%O 1,1
%A _Jaroslav Krizek_, Dec 11 2009
%E More terms from _Michel Marcus_, Sep 11 2013
%E Corrected by _Robert Israel_, Nov 03 2020