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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
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.
EXAMPLE
a(9) = 19 because there are 19 primitive normal polynomials of degree 9 over GF(2).
CROSSREFS
Sequence in context: A146812 A147236 A146599 * A050613 A145940 A147103
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