Geodesic
Ramanujan type trigonometric formulas: the general form for the argument \(\frac{2\pi}{7}\)
Journal of integer sequences, Tome 12 (2009) no. 8
In this paper, we present many general identities connected with the classical Ramanujan equality. Moreover, we give Binet formulas for an accelerator sequence for Catalan's constant.
Classification : 11B37, 11B83, 11Y55, 33B10
Keywords: Ramanujan equalities, trigonometric recurrences 
@article{JIS_2009__12_8_a2,
     author = {Witu{\l}a,  Roman},
     title = {Ramanujan type trigonometric formulas: the general form for the argument \(\frac{2\pi}{7}\)},
     journal = {Journal of integer sequences},
     year = {2009},
     volume = {12},
     number = {8},
     zbl = {1201.11022},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JIS_2009__12_8_a2/}
}
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Wituła,  Roman. Ramanujan type trigonometric formulas: the general form for the argument \(\frac{2\pi}{7}\). Journal of integer sequences, Tome 12 (2009) no. 8. http://geodesic.mathdoc.fr/item/JIS_2009__12_8_a2/