%I A084316
%S A084316 1,3,20,11,24,5,6,39,98,29,120,23,64,13,104,15,1716,323,284,499,62,1099,
%T A084316 1264,215,1274,51,512,447,1768,209,1332,31,32,373,34,1475,258,835,2300,
%U A084316 519,5780,419,5374,1275,6974,1655,6626,479,10240,10549,3008,883,13938
%N A084316 a(n) is the smallest number x such that GCD[p(x)+1,x+1]=n, where p(j) 
               is the j*th prime.
%F A084316 a(n)=Min{x; A066752(x)=n}
%e A084316 In A066752, n=5 arises first at the 24th position, so
%e A084316 A084316[5]=a(5)=24.
%t A084316 f[x_] := GCD[Prime[x]+1, x+1] t=Table[0, {256}]; Do[s=f[n]; If[s<257&&t[[s]]==0, 
               t[[s]]=n], {n, 1, 100000}]; t
%Y A084316 Cf. A084309-A084315.
%Y A084316 Sequence in context: A067607 A013332 A063871 this_sequence A126810 A115280 
               A081849
%Y A084316 Adjacent sequences: A084313 A084314 A084315 this_sequence A084317 A084318 
               A084319
%K A084316 nonn
%O A084316 1,2
%A A084316 Labos E. (labos(AT)ana.sote.hu), Jun 13 2003