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 A107222 Number of primitive normal polynomials of degree n over GF(2). 2
 1, 1, 1, 1, 3, 3, 7, 7, 19, 29, 87, 52, 315, 291, 562, 1017, 3825, 2870, 13797, 11255, 23579, 59986, 178259, 103680, 607522, 859849, 1551227, 1815045, 9203747, 5505966, 28629151, 33552327, 78899078, 167112969, 333342388, 267841392, 1848954877, 2411186731 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 COMMENTS No formula for the terms is currently known. [Joerg Arndt, Apr 02 2011] LINKS Joerg Arndt, Matters Computational (The Fxtbook), section 42.6.3 "The number of binary normal bases", pp. 904-907. Joerg Arndt, C++ program used for computing this sequence EXAMPLE a(9) = 19 because there are 19 primitive normal polynomials of degree 9 over GF(2). CROSSREFS Cf. A027362, A135498. Sequence in context: A146812 A147236 A146599 * A050613 A145940 A147103 Adjacent sequences: A107219 A107220 A107221 * A107223 A107224 A107225 KEYWORD nonn,hard AUTHOR Joerg Arndt, Jun 08 2005, Oct 15 2005 EXTENSIONS Three more terms added from the Arndt website by N. J. A. Sloane, Feb 22 2008 Terms a(34)..a(38) from Joerg Arndt, Apr 17 2016 STATUS approved

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Last modified March 26 04:20 EDT 2023. Contains 361529 sequences. (Running on oeis4.)