This site is supported by donations to The OEIS Foundation.

 Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing. Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A319883 Decimal expansion of the steradian solid angle subtended by one pentagonal facet of the icosidodecahedron. 4
 7, 4, 7, 4, 4, 1, 7, 1, 8, 2, 0, 9, 1, 3, 3, 9, 6, 1, 8, 3, 9, 9, 5, 9, 4, 6, 5, 6, 6, 6, 3, 2, 0, 5, 6, 8, 0, 4, 4, 1, 0, 0, 5, 7, 1, 7, 4, 3, 0, 4, 8, 4, 0, 8, 5, 6, 7, 1, 9, 3, 1, 4, 7, 4, 4, 7, 0, 8, 1, 1, 1, 7, 6, 8, 5, 6, 0, 4, 0, 2 (list; constant; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Eric Weisstein's World of Mathematics, Icosidodecahedron Eric Weisstein's World of Mathematics,  Spherical Polygon FORMULA 2*Pi - 5*arctan(2). 20*A319881 + 12*A319883 = 4*Pi. EXAMPLE 0.74744171820913396183995946566632056804410057174304... MATHEMATICA RealDigits[2*Pi - 5*ArcTan[2], 10, 80][[1]] CROSSREFS Cf. A319881. Cuboctahedron: A236555, A236556. Sequence in context: A160575 A194361 A153586 * A153186 A085469 A050996 Adjacent sequences:  A319880 A319881 A319882 * A319884 A319885 A319886 KEYWORD nonn,cons AUTHOR Bradley Klee, Sep 30 2018 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 9 13:50 EST 2019. Contains 329877 sequences. (Running on oeis4.)