0,3

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

V. C. Harris, Another proof of the infinitude of primes, Amer. Math. Monthly, 63 (1956), 711.

Sequence in context: A103045 A126464 A041979 this_sequence A013205 A042365 A072043

Adjacent sequences: A001683 A001684 A001685 this_sequence A001687 A001688 A001689

nonn

N. J. A. Sloane (njas(AT)research.att.com).