A098091 - OEIS

This site is supported by donations to The OEIS Foundation.

A098091

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

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

	OFFSET	`5,3`
	COMMENTS	`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 * A057450 A077274 A080650` `Adjacent sequences: A098088 A098089 A098090 * A098092 A098093 A098094`
	KEYWORD	`nonn`
	AUTHOR	`Frederic Chapoton (fchapoton(AT)voila.fr), Sep 14 2004`

Content is available under The OEIS End-User License Agreement .

Last modified February 14 20:13 EST 2012. Contains 205663 sequences.