%N In the decimal expansion of Pi, the first occurrence of these primes begins at a prime position.
%C We label the positions in 3.14159... so that 1 is in position 1, 4 in position 2, 1 in position 3, 5 in position 4, and so on.
%e The first 19 in the decimal expansion of Pi (see A000796) starts in position 37, which is a prime.
%Y Cf. A000796.
%A _Vicente Izquierdo Gomez_, Sep 01 2012
%E Edited by _N. J. A. Sloane_, Sep 09 2012