%I #5 Mar 30 2012 18:35:21
%S 1,1,0,1,2,1,3,7,10,17,33,56,102,197,359,617,1128,2182,3966,7488,
%T 14538,26766,51232,95325,174742,335555,657893,1266230,2485507,4793512,
%U 8521770,16519171,31580739,62246045,116079942,229064794,440508973,848388680
%N Number of products of distinct primes <= prime(n) equal to -1 (mod prime(n)).
%K nonn
%O 1,5
%A _David W. Wilson_