%I #2 Mar 30 2012 17:31:29
%S 31,34,37,46,61,100,241,800,3733,23824,200777,2159228,28739455,
%T 461652916,8767088533,193511261098,4894482550975,140176399060982
%N a(1) = 31, a(n) = prime(a(n-1)) - 3a(n-1).
%t NestList[ Prime@# - 3# &, 31, 17]
%Y Cf. A007097, A074271, A179274, A179511, A179512, A179513, A179515, A179516, A179517, A179518.
%K nonn
%O 1,1
%A _Robert G. Wilson v_, Jul 17 2010