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A152159 A sequence set up on the base 16 Pi digits BBP: a(n)=Floor[Mod[(4/(8*n + 1) - 2/(8*n + 4) - 1/(8*n + 5) - 1/(8*n + 6))*16^n, 4]]. 1
3, 2, 2, 1, 2, 0, 2, 1, 1, 0, 0, 1, 1, 0, 2, 2, 1, 0, 3, 0, 3, 2, 0, 0, 2, 3, 1, 2, 3, 3, 3, 2, 2, 2, 1, 0, 1, 2, 0, 1, 2, 0, 1, 3, 3, 0, 1, 3, 1, 2, 1, 0, 0, 0, 0, 2, 1, 2, 0, 1, 3, 1, 2, 2, 3, 3, 0, 1, 1, 0, 3, 2, 2, 3, 2, 3, 3, 2, 0, 3, 1, 3, 0, 1, 1, 3, 3, 1, 1, 0, 0, 3, 1, 3, 1, 0, 1, 3, 0, 1, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

The idea here is to associate a pseudo-random sequence with the BBP pi digits.

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..1000

FORMULA

a(n) = Floor[Mod[(4/(8*n + 1) - 2/(8*n + 4) - 1/(8*n + 5) - 1/(8*n + 6))*16^n, 4]].

MATHEMATICA

Table[Floor[Mod[(4/(8*n + 1) - 2/(8*n + 4) - 1/(8*n + 5) - 1/(8*n + 6))*16^n, 4]], {n, 0, 100}]

CROSSREFS

Sequence in context: A016558 A154395 A214609 * A090341 A251092 A175632

Adjacent sequences:  A152156 A152157 A152158 * A152160 A152161 A152162

KEYWORD

nonn,base

AUTHOR

Roger L. Bagula and Alexander R. Povolotsky, Nov 27 2008

STATUS

approved

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Last modified September 20 01:58 EDT 2019. Contains 327207 sequences. (Running on oeis4.)