A102272 - OEIS

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A102272

2-class number of Q(sqrt(-21p)) as p runs through primes in A102271.

16, 8, 8, 8, 16, 16, 8, 32, 16, 16, 16, 8, 16, 8, 64, 8, 8, 8, 8, 128, 16, 8, 8, 32 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	REFERENCES	`Cohn, H. and Lagarias, J. C., On the existence of fields governing the 2-invariants of the classgroup of Q(sqrt{dp}) as p varies, Math. Comp. 41 (1983), 711-730.`
	CROSSREFS	`Cf. A102269-A102275.` `Sequence in context: A033336 A204325 A102270 * A083536 A040243 A164703` `Adjacent sequences: A102269 A102270 A102271 * A102273 A102274 A102275`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Feb 19 2005`

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Last modified February 16 01:56 EST 2012. Contains 205860 sequences.