id:A001361 - OEIS Search Results

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Number of points in interior of n-th crystal ball in E_8 lattice.

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1, 241, 26641, 338401, 2240161, 10242001, 36638641, 109907521, 288653761, 683158321, 1486914001, 3020862241, 5793372001, 10579330321, 18522042481, 31261968001, 51096647041, 81176500081, 125741512081 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`Index entries for crystal ball sequences` `J. H. Conway and N. J. A. Sloane, Low-Dimensional Lattices VII: Coordination Sequences, Proc. Royal Soc. London, A453 (1997), 2369-2389 (Abstract, pdf, ps).` `G. Nebe and N. J. A. Sloane, Home page for this lattice`
	MAPLE	`57/7x^8-108/7x^7+30x^6-72x^5+39x^4-36x^3+300/7x^2+24/7x+1`
	CROSSREFS	`Cf. A008340, A008349.` `Sequence in context: A094732 A119728 A133327 this_sequence A120377 A060110 A113468` `Adjacent sequences: A001358 A001359 A001360 this_sequence A001362 A001363 A001364`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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