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 A050254 Starting positions of strings of 2 7's in the decimal expansion of Pi. 1
 559, 621, 625, 633, 739, 742, 890, 948, 954, 1066, 1087, 1179, 1261, 1307, 1545, 1589, 1590, 1591, 1630, 1704, 1953, 2049, 2173, 2212, 2325, 2337, 2471, 2672, 3057, 3074, 3111, 3278, 3282, 3806, 3941, 4143, 4208, 4345, 4441, 4575, 4576 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Eric Weisstein's World of Mathematics, Pi Digits MATHEMATICA q=8!; z=7; a=RealDigits[Pi, 10, q]; lst={}; Do[b=a[[1]][[n]]; c=a[[1]][[n+1]]; If[b==z&&c==z, AppendTo[lst, n-1]], {n, q-1}]; lst (* Vladimir Joseph Stephan Orlovsky, Jun 19 2009 *) CROSSREFS Sequence in context: A253483 A185772 A186134 * A139197 A136346 A234263 Adjacent sequences:  A050251 A050252 A050253 * A050255 A050256 A050257 KEYWORD nonn,base AUTHOR STATUS approved

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Last modified October 15 03:16 EDT 2019. Contains 328025 sequences. (Running on oeis4.)