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a(n) = prime(n*10^9).
0

%I #5 Sep 23 2022 23:58:53

%S 22801763489,47055833459,71856445751,97011687217,122430513841,

%T 148059109201,173862636221,199815106433,225898512559,252097800623,

%U 278401257857,304799583149,331284360247,357850012873,384489816343,411199041101,437972847209,464808491341,491701819267

%N a(n) = prime(n*10^9).

%t Table[Prime[10^9*n],{n,20}]

%K nonn

%O 1,1

%A _Zak Seidov_, Aug 29 2006

%E a(16)-a(19) from _Jon E. Schoenfield_, Sep 23 2022