1,1
Equals 2*A014547
Eric Weisstein's World of Mathematics, Euler Number
Eric Weisstein's World of Mathematics, Integer Sequence Primes
Cf. A014547.
Sequence in context: A092187 A092765 A056315 this_sequence A074061 A125081 A023644
Adjacent sequences: A103231 A103232 A103233 this_sequence A103235 A103236 A103237
nonn,hard,more
Eric Weisstein (eric(AT)weisstein.com), Jan 26, 2005
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