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A027695 Number of primitive polynomials of degree n over GF(4). 2
1, 2, 4, 12, 32, 120, 288, 1512, 4096, 15552, 48000, 240064, 552960, 3439800, 9483264, 35640000, 134217728, 673699800, 1451188224, 9644765256, 23685120000, 115605729792, 401556013056, 1996264531840 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..23.

MAPLE

with(numtheory): phi(4^n-1)/n;

CROSSREFS

Sequence in context: A216819 A216820 A148194 * A148195 A169807 A005028

Adjacent sequences:  A027692 A027693 A027694 * A027696 A027697 A027698

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified November 28 19:08 EST 2014. Contains 250399 sequences.