%I #5 Apr 06 2019 09:29:23

%S 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,

%T 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,

%U 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

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

%e 1.00150511209405161201979209228...

%t RealDigits[Sec[Pi Degree],10,120][[1]] (* _Harvey P. Dale_, Apr 06 2019 *)

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

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

%K cons,nonn

%O 1,5

%A _Rick L. Shepherd_, Jul 31 2002