id:A145927 - OEIS Search Results

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Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a tee 1,1 1,2 1,3 2,2 in any orientation.

+0
1

1, 1, 1, 1, 6, 1, 38, 9, 408, 33, 7604, 404, 271731, 7941, 15992426, 262632, 1666574068, 14831415, 309972197784, 1538127410, 100682581657471, 275592188347, 57498326956771300, 87279885007004, 57832081083719379686 (list; graph; listen)

	OFFSET	`1,5`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.0.0.0.0` `.0.1.0.0.0.0.1.0` `.1.1.1.0.0.1.1.1` `.0.0.0.0.0.0.0.0` `.0.0.0.0.0.0.0.0` `.1.1.1.0.0.1.1.1` `.0.1.0.0.0.0.1.0` `.0.0.0.0.0.0.0.0`
	CROSSREFS	`Sequence in context: A038255 A075501 A089504 this_sequence A113365 A145356 A145357` `Adjacent sequences: A145924 A145925 A145926 this_sequence A145928 A145929 A145930`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Oct 25 2008`

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

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