A164334 - OEIS

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A164334

Quartic recurrence sequence a(0) = 1, a(n) = n*a(n-1)^4

1, 1, 2, 48, 21233664, 1016411962239204484414785454080 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	COMMENTS	`Number of different orderings for n-input trees in a Free Quaternary Decision Diagram`
	FORMULA	`a(0) = 1, a(n) = n*a(n-1)^4`
	CROSSREFS	`Quartic extension of A052129 and A123851` `Sequence in context: A166475 A152688 A046873 * A100540 A007861 A058845` `Adjacent sequences: A164331 A164332 A164333 * A164335 A164336 A164337`
	KEYWORD	`nonn`
	AUTHOR	`David Willingham (D.Willingham(AT)wmin.ac.uk), Aug 13 2009`

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Last modified February 14 14:07 EST 2012. Contains 205623 sequences.