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

Author

Rick L. Shepherd, May 05 2003

Keywords

• base
• nonn

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

• 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).

Extensions

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