A102270 - OEIS

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A102270

2-class number of Q(sqrt(-21p)) as p runs through primes in A102269.

16, 8, 8, 8, 16, 8, 16, 16, 16, 8, 16, 32, 8, 8, 8, 8, 32, 8, 16, 64, 32, 8, 32, 8, 8, 128 (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: A007263 A033336 A204325 * A102272 A083536 A040243` `Adjacent sequences: A102267 A102268 A102269 * A102271 A102272 A102273`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Feb 19 2005`

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Last modified February 17 18:01 EST 2012. Contains 206061 sequences.