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A050209
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Starting positions of strings of 3 1's in the decimal expansion of Pi.
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1
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153, 983, 3503, 3992, 4508, 6116, 6803, 6963, 8366, 11730, 12527, 12611, 12700, 12701, 13597, 14375, 15190, 16732, 16733, 19627, 22270, 22897, 23208, 23244, 23660, 25205, 25448, 25752, 27053, 29492, 29687, 29810, 31281, 31488, 32498
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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LINKS
| Index entries for sequences related to the number Pi
Eric Weisstein's World of Mathematics, Pi Digits
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MATHEMATICA
| a=RealDigits[Pi, 10, 9! ]; lst={}; Do[b=a[[1]][[n]]; c=a[[1]][[n+1]]; d=a[[1]][[n+2]]; If[b==1&&c==1&&d==1, AppendTo[lst, n-1]], {n, 9!-2}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Jun 02 2009]
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CROSSREFS
| Sequence in context: A199851 A181775 A193249 * A109142 A014576 A087414
Adjacent sequences: A050206 A050207 A050208 * A050210 A050211 A050212
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KEYWORD
| nonn,base
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AUTHOR
| Eric Weisstein (eric(AT)weisstein.com)
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