id:A063759 - OEIS Search Results

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Spherical growth series for modular group.

+0
6

1, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192, 256, 384, 512, 768, 1024, 1536, 2048, 3072, 4096, 6144, 8192, 12288, 16384, 24576, 32768, 49152, 65536, 98304, 131072, 196608, 262144, 393216, 524288, 786432, 1048576, 1572864, 2097152 (list; graph; listen)

	OFFSET	`0,2`
	REFERENCES	`P. de la Harpe, Topics in Geometric Group Theory, Univ. Chicago Press, 2000, p. 156.`
	LINKS	`Index entries for sequences related to modular groups`
	FORMULA	`G.f.: (1+3x+2x^2)/(1-2*x^2).`
	CROSSREFS	`Cf. A054886, A029744.` `Sequence in context: A147606 A085147 A145751 this_sequence A163978 A139041 A136483` `Adjacent sequences: A063756 A063757 A063758 this_sequence A063760 A063761 A063762`
	KEYWORD	`nonn,nice,easy`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Aug 14 2001`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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