A037234 - OEIS

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A037234

a(0) = 0; for n > 0, a(n) = number of rings with n elements.

0, 1, 2, 2, 11, 2, 4, 2, 52, 11, 4, 2, 22, 2, 4, 4, 390, 2, 22, 2, 22, 4, 4, 2, 104, 11, 4, 59, 22, 2, 8, 2 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	COMMENTS	`This entry is to accommodate those who use the convention that a(0)=0.`
	LINKS	`Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.`
	CROSSREFS	`A027623 is the main entry for this sequence.` `Sequence in context: A081088 A001038 A027623 * A141651 A090525 A126806` `Adjacent sequences: A037231 A037232 A037233 * A037235 A037236 A037237`
	KEYWORD	`nonn,mult`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 15 14:02 EST 2012. Contains 205811 sequences.