%I #10 Mar 24 2021 22:16:16
%S -1,2,3,-3,6,4,9,-6,-5,15,6,10,21,-12,-9,-10,30,11,-18,36,13,-21,-15,
%T 12,25,51,-27,54,28,9,-33,-23,69,-15,75,26,27,-42,-29,-30,90,19,96,49,
%U 99,-88,-93,-57,114,58,-40,120,25,-43,-44,-45,135,46,70,141,-88
%N Solutions s to the equation 1=s*prime(n)+t*prime(n+1) with |s| as small as possible.
%t Table[ Part[ Part[ ExtendedGCD[ Prime[ i ], Prime[ i+1 ] ], 2 ], 1 ], {i, 50} ]
%o (PARI) a(n)=gcdext(prime(n),prime(n+1))[1] \\ _Charles R Greathouse IV_, Nov 16 2015
%Y Cf. A045893.
%K sign
%O 1,2
%A _Ralf W. Grosse-Kunstleve_
%E Name made stricter and terms updated and extended by _Sean A. Irvine_, Mar 24 2021
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