OFFSET
1,1
LINKS
Stanislav Sykora, Table of n, a(n) for n = 1..2000
Wikipedia, Platonic solid.
FORMULA
Equals 2*Pi - 5*arcsin(2/3).
EXAMPLE
2.6345470260447546596513034674924022914118092285116431884051417273...
MATHEMATICA
RealDigits[2*Pi - 5*ArcSin[2/3], 10, 120][[1]] (* Amiram Eldar, May 22 2023 *)
PROG
(PARI) 2*Pi-5*asin(2/3)
CROSSREFS
KEYWORD
AUTHOR
Stanislav Sykora, Jan 28 2014
STATUS
approved