OFFSET
1,1
LINKS
Paolo Xausa, Table of n, a(n) for n = 1..10000
FORMULA
Equals 9*A272488.
EXAMPLE
6.1563625798620371947937930642806724537...
MATHEMATICA
First[RealDigits[18*Sin[Pi/9], 10, 100]] (* Paolo Xausa, Mar 19 2024 *)
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
R. J. Mathar, Aug 24 2023
STATUS
approved