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A083632 Starting positions of strings of four 7's in the decimal expansion of Pi. 2
1589, 5241, 5322, 5863, 29504, 32478, 33107, 35457, 40792, 52313, 69841, 81356, 87288, 95735, 96505, 96984, 126389, 135083, 137923, 138108, 145767, 151494, 156637, 162248, 162249, 188346, 197069, 203946, 208362, 211588, 221435, 233147 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..32.

Index entries for sequences related to the number Pi

Dave Andersen, Pi-Search Page

Eric Weisstein's World of Mathematics, Pi Digits.

MATHEMATICA

Transpose[StringPosition[StringDrop[ToString[N[Pi, 9! ]], 2], "7777"]][[1]] (* Vladimir Joseph Stephan Orlovsky, Jun 19 2009 *)

CROSSREFS

Cf. A083631 (three 7's), A083633 (five 7's).

Sequence in context: A233378 A083631 A224938 * A224939 A049520 A252085

Adjacent sequences:  A083629 A083630 A083631 * A083633 A083634 A083635

KEYWORD

base,nonn

AUTHOR

Rick L. Shepherd, May 04 2003

STATUS

approved

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Last modified April 20 06:59 EDT 2021. Contains 343125 sequences. (Running on oeis4.)