id:A098091 - OEIS Search Results

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Graded dimension of the space of invariant bilinear forms on the free pre-Lie algebra on one generator.

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1, 1, 4, 7, 17, 36, 88, 196, 481, 1148, 2838, 7020, 17708, 44837, 114971, 296457 (list; graph; listen)

	OFFSET	`5,3`
	COMMENT	`The sequence starts at index 5 because the previous terms vanish.`
	CROSSREFS	`This is related in some sense to A000081.` `Sequence in context: A023860 A009881 A049944 this_sequence A057450 A077274 A080650` `Adjacent sequences: A098088 A098089 A098090 this_sequence A098092 A098093 A098094`
	KEYWORD	`nonn`
	AUTHOR	`Frederic Chapoton (fchapoton(AT)voila.fr), Sep 14 2004`

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.