The OEIS is looking to hire part-time people to help edit core sequences, upload scanned documents, process citations, fix broken links, etc. - Neil Sloane, njasloane@gmail.com
0,1
This sequence is also decimal expansion of cosine of 50 degrees. - Mohammad K. Azarian, Jun 29 2013
Ivan Panchenko, Table of n, a(n) for n = 0..1000
Equals cos(5*pi/18) = 2F1(11/12,1/12;1/2;3/4) / 2 . [R. J. Mathar, Oct 27 2008]
RealDigits[ Sin[ 2Pi/9], 10, 111][[1]] (* Robert G. Wilson v *)
RealDigits[Sin[40 Degree], 10, 120][[1]] (* Harvey P. Dale, Mar 27 2015 *)
Sequence in context: A145011 A173625 A086036 * A244685 A118421 A158233
Adjacent sequences: A019846 A019847 A019848 * A019850 A019851 A019852
nonn,cons
N. J. A. Sloane.
approved