A057782 - OEIS

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A057782

Building block is trapezoid formed from 3 equilateral triangles; sequence gives number of pieces (polytraps) that can be formed from n such trapezoids.

1, 9, 94, 1552, 27285, 509805 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	REFERENCES	`Computed by Brendan Owen.`
	LINKS	`Andrew Clarke, Other Polyforms`
	CROSSREFS	`Cf. A000228, A000105, A058883.` `Sequence in context: A034992 A048359 A099297 * A115071 A000562 A193216` `Adjacent sequences: A057779 A057780 A057781 * A057783 A057784 A057785`
	KEYWORD	`nonn,nice`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Oct 29 2000`
	EXTENSIONS	`Link updated by William Rex Marshall (w.r.marshall(AT)actrix.co.nz), Dec 16 2009`

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Last modified February 17 18:23 EST 2012. Contains 206063 sequences.