OFFSET
-1,1
LINKS
Paolo Xausa, Table of n, a(n) for n = -1..10000
Eric Weisstein's World of Mathematics, Regular Polygon.
Eric Weisstein's World of Mathematics, Sagitta
EXAMPLE
0.09945618368982900345579881132233811429892525066...
MATHEMATICA
First[RealDigits[Tan[Pi/16]/2, 10, 100]]
CROSSREFS
KEYWORD
AUTHOR
Paolo Xausa, Jul 30 2024
STATUS
approved