A018990 - OEIS

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A018990

Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite ATV = AlPO4-25 [ Al12P12O48 ].

0, 10, 20, 244, 1028, 7831, 45586, 320653, 2114588 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`2,2`
	REFERENCES	`G. Thimm and W. E. Klee, Zeolite cycle sequences, Zeolites, 19, pp. 422-424, 1997.`
	LINKS	`Table of n, a(n) for n=2..10.` `G. Thimm, Cycle sequences of crystal structures`
	CROSSREFS	`Sequence in context: A006993 A217318 A038693 * A160479 A085222 A085221` `Adjacent sequences: A018987 A018988 A018989 * A018991 A018992 A018993`
	KEYWORD	`nonn`
	AUTHOR	`Georg Thimm (mgeorg(AT)ntu.edu.sg)`
	STATUS	`approved`

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Last modified June 19 19:50 EDT 2013. Contains 226416 sequences.