id:A094171 - OEIS Search Results

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Number of quasi-tetrominoes in an n X n bounding box.

+0
3

0, 0, 1, 20, 147, 670, 2239, 6138, 14531, 30904, 60369, 110300, 190671, 314910, 500247, 768810, 110300, 190671, 314910, 500247, 768810, 1147959, 1671648 (list; graph; listen)

	OFFSET	`0,4`
	LINKS	`Erich Friedman, Illustration of initial terms`
	EXAMPLE	`See A094170 for example of similar sequence.`
	CROSSREFS	`Cf. A094170, A094172.` `Sequence in context: A105939 A054389 A071816 this_sequence A100190 A022680 A108647` `Adjacent sequences: A094168 A094169 A094170 this_sequence A094172 A094173 A094174`
	KEYWORD	`nonn`
	AUTHOR	`Jon Wild (wild(AT)music.mcgill.ca), May 07 2004`
	EXTENSIONS	`Corrected and extended by Jon Wild (wild(AT)music.mcgill.ca), May 11 2004`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

AT&T Labs Research