Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 4500 articles have referenced us, often saying "we would not have discovered this result without the OEIS".
Table of n, a(n) for n=1..24.
Index entries for sequences related to the number Pi
Dave Andersen, Pi-Search Page
Eric Weisstein's World of Mathematics, Pi Digits.
Cf. A083644 (five 9's), A083646 (seven 9's).
Sequence in context: A253616 A253611 A210081 * A145718 A049516 A049517
Adjacent sequences: A083642 A083643 A083644 * A083646 A083647 A083648
Rick L. Shepherd, May 06 2003