A029679 - OEIS

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A029679

Theta series of quadratic form with Gram matrix [ 2, 0, 0; 0, 2, 1; 0, 1, 4 ].

1, 4, 8, 8, 8, 16, 8, 2, 24, 20, 8, 16, 24, 16, 4, 16, 16, 40, 24, 8, 40, 0, 16, 32, 24, 28, 24, 32, 6, 32, 16, 16, 56, 48, 16, 0, 40, 32, 40, 16, 24, 56, 0, 16, 48, 48, 16, 48, 56, 4, 40, 16, 40, 64, 32, 16, 12, 64, 32, 40, 48, 16, 48, 10, 32, 80, 16, 32, 80, 32, 0, 48, 72, 56, 32, 40 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,2`
	COMMENTS	`This is the digonal C lattice (the even holotype) of dimension 3.`
	LINKS	`John Cannon, Table of n, a(n) for n = 0..5000` `G. Nebe and N. J. A. Sloane, Home page for this lattice`
	EXAMPLE	`1 + 4q^2 + 8q^4 + 8q^6 + 8q^8 + 16q^10 + 8q^12 + 2q^14 + 24q^16 + ...`
	CROSSREFS	`Sequence in context: A331067 A040012 A054006 * A304651 A187768 A344984` `Adjacent sequences: A029676 A029677 A029678 * A029680 A029681 A029682`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane.`
	STATUS	`approved`

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Last modified March 26 23:26 EDT 2023. Contains 361553 sequences. (Running on oeis4.)