A073441 - OEIS

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A073441

Decimal expansion of sec (Pi degrees) (of course sec (Pi radians) = -1).

1, 0, 0, 1, 5, 0, 5, 1, 1, 2, 0, 9, 4, 0, 5, 1, 6, 1, 2, 0, 1, 9, 7, 9, 2, 0, 9, 2, 2, 8, 1, 6, 6, 8, 7, 6, 9, 2, 5, 7, 3, 6, 0, 8, 9, 2, 5, 0, 2, 3, 1, 1, 2, 2, 3, 4, 3, 3, 6, 6, 9, 1, 5, 1, 7, 7, 8, 1, 3, 8, 8, 4, 7, 5, 0, 5, 3, 7, 4, 5, 6, 7, 2, 8, 6, 8, 1, 0, 2, 8, 7, 5, 0, 0, 0, 9, 4, 2, 4, 7, 4, 3, 4, 6, 1

(list; constant; graph; refs; listen; history; text; internal format)

OFFSET

1,5

LINKS

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

EXAMPLE

1.00150511209405161201979209228...

MATHEMATICA

RealDigits[Sec[Pi Degree], 10, 120][[1]] (* Harvey P. Dale, Apr 06 2019 *)

PROG

(PARI) 1/cos(Pi^2/180)

CROSSREFS