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A073448 Decimal expansion of sec 1. 10
1, 8, 5, 0, 8, 1, 5, 7, 1, 7, 6, 8, 0, 9, 2, 5, 6, 1, 7, 9, 1, 1, 7, 5, 3, 2, 4, 1, 3, 9, 8, 6, 5, 0, 1, 9, 3, 4, 7, 0, 3, 9, 6, 6, 5, 5, 0, 9, 4, 0, 0, 9, 2, 9, 8, 8, 3, 5, 1, 5, 8, 2, 7, 7, 8, 5, 8, 8, 1, 5, 4, 1, 1, 2, 6, 1, 5, 9, 6, 7, 0, 5, 9, 2, 1, 8, 4, 1, 4, 1, 3, 2, 8, 7, 3, 0, 6, 6, 7, 1, 1, 4, 9, 1, 0 (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

Table of n, a(n) for n=1..105.

EXAMPLE

1.85081571768092561791175324139...

MATHEMATICA

RealDigits[Sec[1], 10, 120][[1]] (* Harvey P. Dale, Mar 13 2013 *)

PROG

(PARI) 1/cos(1)

CROSSREFS

Cf. A049470 (cos(1)=1/A073448), A049469 (sin(1)), A049471 (tan(1)), A073447 (csc(1)), A073449 (cot(1)).

Sequence in context: A230162 A197841 A143347 * A073745 A086730 A249449

Adjacent sequences:  A073445 A073446 A073447 * A073449 A073450 A073451

KEYWORD

cons,nonn

AUTHOR

Rick L. Shepherd, Aug 01 2002

STATUS

approved

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Last modified November 17 00:14 EST 2018. Contains 317275 sequences. (Running on oeis4.)