Invitation: celebrating 50 years of OEIS, 250000 sequences, and Sloane's 75th, there will be a conference at DIMACS, Rutgers, Oct 9-10 2014.
Table of n, a(n) for n=1..27.
Index entries for sequences related to the number Pi
Dave Andersen, Pi-Search Page
Eric Weisstein's World of Mathematics, Pi Digits.
Cf. A083643 (four 9's), A083645 (six 9's).
Sequence in context: A160033 A083642 A083643 * A061225 A210081 A083645
Adjacent sequences: A083641 A083642 A083643 * A083645 A083646 A083647
Rick L. Shepherd, May 06 2003