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

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

Cf. A051554 (cos(Pi degrees)=1/A073441), A051553 (sin(Pi degrees)), A051555 (tan(Pi degrees)), A073440 (csc(Pi degrees)), A073442 (cot(Pi degrees)).

Sequence in context: A036478 A059628 A325972 * A202325 A337084 A199382

Adjacent sequences: A073438 A073439 A073440 * A073442 A073443 A073444

Keyword

cons,nonn

Author

Rick L. Shepherd, Jul 31 2002

Status

approved