

A000209


Nearest integer to tan n.


1



0, 2, 2, 0, 1, 3, 0, 1, 7, 0, 1, 226, 1, 0, 7, 1, 0, 3, 1, 0, 2, 2, 0, 2, 2, 0, 1, 3, 0, 1, 6, 0, 1, 75, 1, 0, 8, 1, 0, 4, 1, 0, 2, 1, 0, 2, 2, 0, 1, 3, 0, 1, 6, 0, 1, 45, 1, 0, 8, 1, 0, 4, 1, 0, 2, 1, 0, 2, 2, 0, 1, 3, 0, 1, 6, 0, 1, 32, 1, 0, 9, 1
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OFFSET

0,2


COMMENTS

"At lunch one day, feeling even more ebullient than usual, he [Richard Feynman] challenged the table to a competition. He bet that he could solve any problem within sixty seconds, to within ten percent accuracy, that could be stated within ten seconds. ... Under pressure, his friends found themselves unable to stump him. ... Then Paul Olum spoke up. ... He demanded the tangent of ten to the hundredth. The competition was over. ... Even Feynman could not produce that on short notice." [James Gleick, Genius, Pantheon, NY, 1992, p. 178.]  N. J. A. Sloane, Jun 25 2018


LINKS

N. J. A. Sloane, Table of n, a(n) for n = 0..20000 (First 1000 terms from T. D. Noe)


MAPLE

Digits := 100; f := n>round(evalf(tan(n))); [ seq(f(n), n=0..100) ];


MATHEMATICA

Round[Tan[Range[0, 90]]] (* Harvey P. Dale, Aug 26 2013 *)


CROSSREFS

Sequence in context: A105524 A221459 A166387 * A170982 A296339 A104245
Adjacent sequences: A000206 A000207 A000208 * A000210 A000211 A000212


KEYWORD

sign


AUTHOR

N. J. A. Sloane


STATUS

approved



