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 * A074061 A125081 A175349
Adjacent sequences: A103231 A103232 A103233 * A103235 A103236 A103237
nonn,hard,more
Eric Weisstein (eric(AT)weisstein.com), Jan 26, 2005