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A236558
Vertex solid angle (steradians) in a regular dodecahedron.
4
2, 9, 6, 1, 7, 3, 9, 1, 5, 3, 7, 9, 7, 3, 1, 4, 9, 6, 7, 8, 7, 4, 0, 9, 0, 3, 8, 6, 0, 2, 3, 3, 9, 4, 6, 4, 8, 1, 8, 4, 1, 9, 5, 8, 6, 2, 5, 4, 5, 9, 1, 3, 7, 0, 1, 9, 2, 0, 2, 7, 1, 5, 6, 2, 3, 1, 4, 5, 0, 1, 7, 9, 5, 6, 4, 0, 3, 2, 9, 6, 1, 5, 2, 1, 5, 8, 1, 8, 2, 6, 4, 6, 2, 5, 7, 2, 2, 2, 1, 1, 6, 6, 0, 6, 6
OFFSET
1,1
LINKS
Wikipedia, Platonic solid.
FORMULA
Equals Pi - arctan(2/11).
EXAMPLE
2.9617391537973149678740903860233946481841958625459137019202715623145...
MATHEMATICA
RealDigits[Pi - ArcTan[2/11], 10, 120][[1]] (* Amiram Eldar, May 22 2023 *)
PROG
(PARI) Pi-atan(2/11)
CROSSREFS
Cf. Analogs: A236555 (tetrahedron), A236556 (octahedron), A019669 (cube), A236557 (icosahedron).
Sequence in context: A193088 A162916 A057273 * A296004 A108986 A011069
KEYWORD
nonn,cons,easy
AUTHOR
Stanislav Sykora, Jan 28 2014
STATUS
approved