The 3 is taken as the first digit of Pi.
Table of n, a(n) for n=1..8.
D. Andersen, The Pi-Search Page
a(2)=29 because the first two digits of e are "27" and "27" begins at the 29th digit of Pi.
Cf. A065593, A000796.
Sequence in context: A287860 A175208 A307954 * A183434 A120789 A135629
Adjacent sequences: A071915 A071916 A071917 * A071919 A071920 A071921
Emery Cox IV (kecox47(AT)earthlink.net), Jun 14 2002