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%I #6 Mar 30 2012 18:39:02
%S 8,78,1002,17018,323324,7436430,215656442,6685349672,247357937828,
%T 10141675450908,436092044389002,20496326086283048,1086305282573001492,
%U 64092011671807087970,3909612711980232366110,261944051702675568529304
%N Smallest x > 1 such that x^prime(n) == 1 mod(prime(i)) 4<=i<=n.
%F a(n)=1+A002110(n)/30
%o (PARI) for(n=3,20,print1((prod(i=1,n, prime(i))+30)/30,","))
%K easy,nonn
%O 4,1
%A _Benoit Cloitre_, May 30 2002
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