A083636 Starting positions of strings of eight 7's in the decimal expansion of Pi.

24658601, 24658602, 82144203, 287248607, 1096547723, 1136093224, 1136093225, 1199887625, 1253506894, 1284344221, 1284344222, 1343455078, 1347842020, 1387894932, 1387894933, 1439845247, 1577148578

Offset

1,1

Comments

From M. F. Hasler, Mar 21 2017: (Start)

Positions 0,1,2,... correspond to digits 3,1,4,... as in the search engines and most related sequences, while some sequences, e.g., A049522, use indexing starting at 1.

Consecutive numbers indicate that there are more than eight '7's in a row, e.g., at positions 24658601, 1136093224, 1387894932,... start runs of nine '7's. The first of these is also A049522(9)-1 = A049523(9)-1. (End)

Links

Table of n, a(n) for n=1..17.

Dave Andersen, Pi-Search Page

James Taylor, Irrational Number Search Engine

Eric Weisstein's World of Mathematics, Pi Digits.

Index entries for sequences related to the number Pi

Crossrefs

Cf. A083635 (seven '7's), A083630 (eight '6's).

Sequence in context: A115533 A256013 A187315 * A124069 A257383 A186839

Adjacent sequences: A083633 A083634 A083635 * A083637 A083638 A083639

Keyword

base,nonn

Author

Rick L. Shepherd, May 05 2003

Extensions

Terms beyond a(3) from M. F. Hasler, Mar 21 2017

Status

approved