id:A137310 - OEIS Search Results

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Numbers n such that a type-4 Gaussian normal basis over GF(2^n) exists.

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1, 3, 7, 9, 13, 15, 25, 37, 43, 45, 49, 67, 73, 79, 87, 93, 97, 105, 115, 127, 135, 139, 153, 163, 165, 169, 175, 177, 189, 193, 199, 205, 207, 213, 219, 235, 265, 277, 279, 303, 307, 309, 319, 325, 343, 345, 363, 373, 387, 405, 409, 417, 423, 433, 435, 465, 469 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`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.`
	CROSSREFS	`Cf. A136415.` `Sequence in context: A024901 A000959 A120226 this_sequence A118567 A118561 A057701` `Adjacent sequences: A137307 A137308 A137309 this_sequence A137311 A137312 A137313`
	KEYWORD	`nonn`
	AUTHOR	`Joerg Arndt (arndt(AT)jjj.de), Apr 05 2008`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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