1,2

A type-t Gaussian normal basis exists for GF(2^n) if p=n*t+1 is prime and gcd(n,(p-1)/ord(2 mod p))==1.

Table of n, a(n) for n=1..57.

Cf. A136415.

Sequence in context: A204085 A230076 A120226 * A118567 A118561 A309406

Adjacent sequences: A137307 A137308 A137309 * A137311 A137312 A137313

nonn

Joerg Arndt, Apr 05 2008

approved