A152196 A sequence based on the digits of Log(10) as a BBP: a(k)=Floor[Mod[(1/2)*((-4)^k)*(6/(4*k + 1) - 3/(4*k + 3) - 1/(4*k + 4)), 3]].

2, 1, 2, 2, 0, 1, 1, 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 0, 2, 0, 1, 1, 1, 2, 2, 0, 2, 2, 1, 0, 0, 2, 0, 2, 0, 2, 0, 1, 0, 2, 2, 1, 1, 1, 0, 0, 2, 1, 0, 1, 0, 1, 0, 0, 1, 2, 0, 0, 0, 2, 2, 1, 0, 1, 0, 2, 2, 2, 0, 2, 1, 0, 2, 2, 0, 0, 1, 1, 2, 2, 2, 1, 0, 2, 1, 2, 1, 2, 0, 0, 1, 1, 0, 0, 2, 2, 2, 2

Offset

0,1

Links

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

Eric Weisstein's World of Mathematics, BBP-Type Formula

Formula

a(k) = Floor[Mod[(1/2)*((-4)^k)*(6/(4*k + 1) - 3/(4*k + 3) - 1/(4*k + 4)), 3]].

Mathematica

Table[Floor[Mod[(1/2)*((-4)^k)*(6/(4*k + 1) - 3/(4*k + 3) - 1/(4*k + 4)), 3]], {k, 0, 100}]

Crossrefs

Sequence in context: A159906 A263444 A276321 * A024375 A025075 A175609

Adjacent sequences: A152193 A152194 A152195 * A152197 A152198 A152199

Keyword

nonn,base

Author

Roger L. Bagula and Alexander R. Povolotsky, Nov 28 2008

Status

approved