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A108535 Positions of balanced digits in the decimal expansion of Pi. 3
5, 155, 173, 179, 210, 236, 253, 262, 274, 275, 293, 352, 353, 359, 390, 410, 468, 603, 636, 654, 661, 674, 696, 703, 723, 732, 764, 765, 766, 767, 780, 796, 804, 822, 836, 857, 875, 885, 897, 918, 924, 961, 981, 985, 995, 996, 1015, 1059, 1200, 1234, 1246 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Cf. A108533 (strong digits), A108534 (weak digits). In the decimal expansion of Pi, balanced digits are much more rare than weak or strong ones.

MATHEMATICA

re=RealDigits[N[Pi, 2900]][[1]]; b={}; Do[r=re[[n]]; If[r==(re[[n-1]]+re[[n+1]])/2, b=Append[b, r]], {n, 2, 2899}]; A108535=b

CROSSREFS

Cf. A108533, A108534.

Sequence in context: A082623 A075598 A105230 * A015019 A151577 A032391

Adjacent sequences:  A108532 A108533 A108534 * A108536 A108537 A108538

KEYWORD

nonn,base

AUTHOR

Zak Seidov (zakseidov(AT)yahoo.com), Jun 08 2005

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Last modified February 16 09:00 EST 2012. Contains 205904 sequences.