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

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

Offset: 1

Author

Jean-Yves BOULAY, Sep 07 2010

Keywords

• base
• nonn
• fini
• full
• less

Comments

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.

Links

• David H. Bailey, The computation of pi to 29360000 decimal digits..., Math. Comp. 50 (1988) 283
• Jean-Yves Boulay, Pi and Golden Number: not random occurrences of the ten digits
• Eric W. Weisstein, Pi digits, MathWorld.

Crossrefs

Cf. A000796, A105177

Programs

Mathematica

DeleteDuplicates[Rest[RealDigits[Pi,10,40][[1]]]] (* Harvey P. Dale, Jan 31 2020 *)

Extensions

Edited by N. J. A. Sloane, Sep 08 2010