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A027743 Number of primitive polynomials of degree n over GF(7). 6
1, 2, 8, 36, 160, 1120, 6048, 37856, 192000, 1376352, 8512000, 59865432, 261273600, 2484333600, 15433134080, 96689376000, 520863744000, 4561057021824, 27124330415616, 199503336577688, 958110720000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..20.

MAPLE

with(numtheory): phi(7^n-1)/n;

CROSSREFS

Sequence in context: A228791 A088675 A228197 * A152124 A147722 A089387

Adjacent sequences:  A027740 A027741 A027742 * A027744 A027745 A027746

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified December 11 10:48 EST 2018. Contains 318049 sequences. (Running on oeis4.)