id:A146018 - OEIS Search Results

Search: id:A146018

Displaying 1-1 of 1 results found.

page 1

Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 2X4 el 1,1 1,2 1,3 1,4 2,4 with any orientation.

+0
1

1, 1, 1, 1, 3, 13, 41, 219, 1033, 8217, 92671, 1241193, 21102313, 438374597, 11919134635, 429471270295, 20089457592037, 1200700834920789, 91306423605321353, 8917989878582336861 (list; graph; listen)

	OFFSET	`1,5`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.1.0.0.0` `.0.0.0.0.1.0.0.1` `.0.0.0.0.1.0.0.1` `.0.0.0.0.1.1.0.1` `.1.1.1.1.0.0.1.1` `.0.0.0.1.0.0.0.0` `.0.0.0.0.1.0.0.0` `.0.1.1.1.1.0.0.0`
	CROSSREFS	`Sequence in context: A095109 A049167 A121162 this_sequence A145946 A109224 A106050` `Adjacent sequences: A146015 A146016 A146017 this_sequence A146019 A146020 A146021`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Oct 26 2008`

page 1

Search completed in 0.002 seconds

Last modified December 19 12:50 EST 2009. Contains 171053 sequences.

AT&T Labs Research