OFFSET
1,1
COMMENTS
Decimal expansion of the ratio of the perimeter of a regular 8-gon (octagon) to its diameter (largest diagonal).
FORMULA
Equals 8*A182168.
EXAMPLE
3.061467458920718173827679872243190934090756499885016331470405085020368271...
MAPLE
evalf(8*sin(Pi/8), 100); # Wesley Ivan Hurt, Feb 01 2017
MATHEMATICA
RealDigits[8*Sin[Pi/8], 10, 120][[1]] (* Amiram Eldar, Jun 26 2023 *)
PROG
(PARI) 8*sin(Pi/8)
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Rick L. Shepherd, Jan 05 2017
STATUS
approved