id:A137343 - OEIS Search Results

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Number of elements of length n with respect to the natural metric in the special group of rational series over the finite field F_2 in two non-commuting variables.

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1, 12, 1296, 505536, 679848192, 3248147205120, 57637071142391808, 3930578658351563587584, 1050888530707010579202637824, 1112792971262327168651248131637248 (list; graph; listen)

	OFFSET	`0,2`
	REFERENCES	`R. Bacher, The special subgroup of invertible non-commutative rational power series as a metric group, arXiv:0804.1092`
	LINKS	`Roland Bacher (Roland.Bacher(AT)ujf-grenoble.fr), Apr 08 2008, Table of n, a(n) for n = 0..14`
	FORMULA	`The reference contains a somewhat complicated formula.`
	CROSSREFS	`Sequence in context: A078294 A009155 A078296 this_sequence A133461 A071309 A067108` `Adjacent sequences: A137340 A137341 A137342 this_sequence A137344 A137345 A137346`
	KEYWORD	`nonn`
	AUTHOR	`Roland Bacher (Roland.Bacher(AT)ujf-grenoble.fr), Apr 08 2008`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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