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A049471 Decimal expansion of tan 1. 7
1, 5, 5, 7, 4, 0, 7, 7, 2, 4, 6, 5, 4, 9, 0, 2, 2, 3, 0, 5, 0, 6, 9, 7, 4, 8, 0, 7, 4, 5, 8, 3, 6, 0, 1, 7, 3, 0, 8, 7, 2, 5, 0, 7, 7, 2, 3, 8, 1, 5, 2, 0, 0, 3, 8, 3, 8, 3, 9, 4, 6, 6, 0, 5, 6, 9, 8, 8, 6, 1, 3, 9, 7, 1, 5, 1, 7, 2, 7, 2, 8, 9, 5, 5, 5, 0, 9, 9, 9, 6, 5, 2, 0, 2, 2, 4, 2, 9, 8 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

1,2

REFERENCES

Mohammad K. Azarian, Forty-Five Nested Equilateral Triangles and cosecant of 1 degree, Problem 813, College Mathematics Journal, Vol. 36, No. 5, November 2005, p. 413-414. Solution published in Vol. 37, No. 5, November 2006, pp. 394-395.

LINKS

Harry J. Smith, Table of n, a(n) for n = 1..20000

EXAMPLE

1.5574077246549022305...

PROG

(PARI) { default(realprecision, 20080); x=tan(1); for (n=1, 20000, d=floor(x); x=(x-d)*10; write("b049471.txt", n, " ", d)); } \\ Harry J. Smith, Jun 13 2009

CROSSREFS

Cf. A093178 Continued fraction. A009001. - Harry J. Smith, Jun 13 2009

Sequence in context: A061382 A113272 A222392 * A049789 A234473 A011500

Adjacent sequences:  A049468 A049469 A049470 * A049472 A049473 A049474

KEYWORD

cons,easy,nonn

AUTHOR

Albert du Toit (dutwa(AT)intekom.co.za), N. J. A. Sloane

STATUS

approved

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Last modified April 25 23:17 EDT 2017. Contains 285426 sequences.