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A220451 A220449(n) mod 7. 2
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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified September 15 20:11 EDT 2019. Contains 327086 sequences. (Running on oeis4.)