id:A014747 - OEIS Search Results

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Theta series of lattice D20+.

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1, 0, 760, 0, 77560, 524288, 2508000, 10485760, 34729720, 99614720, 259114704, 608174080, 1327461600, 2739404800, 5341699520, 9921626112, 17701924600, 30592204800, 51294999960, 83277905920, 131880275664 (list; graph; listen)

	OFFSET	`0,3`
	REFERENCES	`J. H. Conway and N. J. A. Sloane, "Sphere Packings, Lattices and Groups", Springer-Verlag, p. 120.`
	FORMULA	`(theta2^20+theta3^20+theta4^20)/2.`
	CROSSREFS	`Sequence in context: A001380 A001920 A034414 this_sequence A022051 A107515 A139664` `Adjacent sequences: A014744 A014745 A014746 this_sequence A014748 A014749 A014750`
	KEYWORD	`nonn`
	AUTHOR	`njas`

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Last modified July 4 13:19 EDT 2008. Contains 140839 sequences.

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