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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 COMMENTS Starting position counted from and after the decimal point. - Harvey P. Dale, Feb 22 2023 LINKS 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 *) SequencePosition[RealDigits[Pi, 10, 240000][[1]], {7, 7, 7, 7}][[;; , 1]]-1 (* Harvey P. Dale, Feb 22 2023 *) 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 March 31 21:40 EDT 2023. Contains 361673 sequences. (Running on oeis4.)