id:A146425 - OEIS Search Results

Search: id:A146425

Displaying 1-1 of 1 results found.

page 1

Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 1010-1111 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 3, 7, 15, 27, 47, 145, 629, 2639, 10689, 40727, 200517, 1226295, 9011761, 67694903, 542738577, 4721537297, 50165476303, 597630948157 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.1.0.1.0.0` `.0.0.1.1.1.1.0.0` `.0.1.0.0.0.0.1.1` `.1.1.0.0.0.0.1.0` `.0.1.0.0.0.0.1.1` `.1.1.0.0.0.0.1.0` `.0.0.1.1.1.1.0.0` `.0.0.1.0.1.0.0.0`
	CROSSREFS	`Sequence in context: A001276 A097080 A146742 this_sequence A147595 A147127 A146726` `Adjacent sequences: A146422 A146423 A146424 this_sequence A146426 A146427 A146428`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

page 1

Search completed in 0.002 seconds

Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

AT&T Labs Research