id:A146244 - OEIS Search Results

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Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 110-111-010 pattern in any orientation.

+0
1

1, 1, 1, 1, 3, 5, 15, 27, 71, 187, 699, 2485, 10357, 44365, 244417, 1388829, 9098951, 61499491, 509779147, 4539566193, 48133963115, 521951245563, 6723339029473, 91767923636107, 1516162394272495, 26177605341894705, 536020923137750911 (list; graph; listen)

	OFFSET	`1,5`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.0.0.0.1.0` `.0.0.1.0.0.1.1.1` `.0.1.1.1.0.1.1.0` `.0.0.1.1.0.0.0.0` `.0.0.0.0.1.1.0.0` `.0.1.1.0.1.1.1.0` `.1.1.1.0.0.1.0.0` `.0.1.0.0.0.0.0.0`
	CROSSREFS	`Sequence in context: A111386 A146582 A053351 this_sequence A146457 A051044 A003536` `Adjacent sequences: A146241 A146242 A146243 this_sequence A146245 A146246 A146247`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net)`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research