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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 * A341941 A090341 A251092 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 May 11 13:41 EDT 2021. Contains 343791 sequences. (Running on oeis4.)