A140816 A third of digital roots of Bernoulli number denominators.

1, 2, 1, 2, 1, 1, 1, 2, 2, 2, 2, 1, 1, 2, 2, 1, 2, 2, 1, 2, 1, 2, 2, 1, 2, 1, 2, 2, 2, 1, 2, 2, 2, 1, 1, 2, 1, 2, 1, 2, 2, 1, 2, 2, 1, 1, 2, 2, 2, 2, 1, 2, 2, 1, 1, 2, 2, 2, 2, 2, 1, 2, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 1, 1, 1, 2, 2, 2, 2, 2, 1, 2, 1, 2, 1, 2, 1, 2, 2, 2, 2, 1, 2, 2, 2, 1, 1, 2, 2, 1, 2, 1

Offset

0,2

Links

Table of n, a(n) for n=0..104.

Formula

a(n)= A010878(A140814(n))/ 3.

Crossrefs

Sequence in context: A302790 A363455 A333849 * A029433 A337144 A088203

Adjacent sequences: A140813 A140814 A140815 * A140817 A140818 A140819

Keyword

nonn,base

Author

Paul Curtz, Jul 16 2008

Extensions

Edited and extended by R. J. Mathar, Jul 29 2008

Status

approved