A220451 A220449(n) mod 7.

1, 1, 4, 3, 1, 5, 2, 5, 5, 6, 1, 5, 4, 3, 4, 4, 2, 5, 4, 6, 1, 6, 6, 3, 4, 6, 2, 5, 2, 2, 1, 6, 2, 3, 4, 3, 3, 5, 2, 3, 1, 6, 1, 1, 4, 3, 1, 5, 2, 5, 5, 6, 1, 5, 4, 3, 4, 4, 2, 5, 4, 6, 1, 6, 6, 3, 4, 6, 2, 5, 2, 2, 1, 6, 2, 3, 4, 3, 3, 5, 2, 3, 1, 6, 1, 1, 4, 3, 1, 5

Offset

1,3

Links

Table of n, a(n) for n=1..90.

V. H. Moll, An arithmetic conjecture on a sequence of arctangent sums, 2012.

Crossrefs

Cf. A220449, A220450, A220451.

Sequence in context: A066204 A217537 A154278 * A020839 A275981 A087274

Adjacent sequences: A220448 A220449 A220450 * A220452 A220453 A220454

Keyword

nonn

Author

N. J. A. Sloane, Dec 22 2012

Status

approved