id:A030429 - OEIS Search Results

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a(n+2) = 7*a(n+1) - 7*a(n) - 9*n; a(n+4) = 9*a(n+3) - 22*a(n+2) + 21*a(n+1) - 7*a(n).

+0
2

1, 2, 7, 26, 115, 596, 3331, 19100, 110329, 638540, 3697405, 21411974, 124001893, 718129334, 4158891979, 24085338398, 139485124807, 807798504728, 4678193659303, 27092766081872, 156902006957821 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Hypothetical numbers of terms in general expressions for Lovelock tensors. Hypothetical extension of sequence A006373 - C. C. Briggs (ccb104(AT)psu.edu)`
	LINKS	`C. C. Briggs, Some Possible Features of General Expressions for Lovelock Tensors ...`
	FORMULA	`Expansion of (1-7x+11x^2-14x^3)/((1-7x+7x^2)(x-1)^2).`
	CROSSREFS	`Cf. A006373.` `Sequence in context: A007168 A150590 A006373 this_sequence A167551 A081566 A141203` `Adjacent sequences: A030426 A030427 A030428 this_sequence A030430 A030431 A030432`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

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