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A171091 Digits in the order in which they appear in the fractional part of the decimal expansion of Pi. 0

%I #16 Jan 31 2020 19:36:46

%S 1,4,5,9,2,6,3,8,7,0

%N Digits in the order in which they appear in the fractional part of the decimal expansion of Pi.

%C 3,1,8,0,9,6,7,5,2,4 (see A049541) and 6,1,8,0,3,9,7,4,2,5 (see A094214) are the equivalent sequences for 1/Pi and 1/phi. Conjecture: These sequences are not random but are in ratio of 3/2 between the first six and last four digits and the first six digits and last four are the same.

%H David H. Bailey, <a href="http://dx.doi.org/10.1090/S0025-5718-1988-0917836-3">The computation of pi to 29360000 decimal digits...</a>, Math. Comp. 50 (1988) 283

%H Jean-Yves Boulay, <a href="http://jean-yves.boulay.pagesperso-orange.fr/pi/index.htm">Pi and Golden Number: not random occurrences of the ten digits</a>

%H Eric W. Weisstein, <a href="http://mathworld.wolfram.com/PiDigits.html">Pi digits</a>, MathWorld.

%t DeleteDuplicates[Rest[RealDigits[Pi,10,40][[1]]]] (* _Harvey P. Dale_, Jan 31 2020 *)

%Y Cf. A000796, A105177

%K base,nonn,fini,full,less

%O 1,2

%A _Jean-Yves BOULAY_, Sep 07 2010

%E Edited by _N. J. A. Sloane_, Sep 08 2010

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Last modified April 24 17:20 EDT 2024. Contains 371962 sequences. (Running on oeis4.)