id:A146574 - 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 0100-0100-1111 pattern in any orientation.

+0
1

1, 1, 1, 1, 1, 1, 3, 5, 11, 21, 43, 131, 425, 1453, 5677, 20565, 100203, 517949, 3251987, 21002085, 153166855, 1157817079, 10741996431, 104706915655 (list; graph; listen)

	OFFSET	`1,7`
	EXAMPLE	`Maximal 8 X 8 example` `.0.0.0.1.1.1.1.0` `.0.0.0.0.1.0.0.1` `.0.0.0.0.1.0.0.1` `.1.0.0.0.0.1.1.1` `.1.1.1.0.0.0.0.1` `.1.0.0.1.0.0.0.0` `.1.0.0.1.0.0.0.0` `.0.1.1.1.1.0.0.0`
	CROSSREFS	`Sequence in context: A077925 A084230 A077465 this_sequence A007873 A004039 A005830` `Adjacent sequences: A146571 A146572 A146573 this_sequence A146575 A146576 A146577`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Nov 04 2008`

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Last modified November 27 14:50 EST 2009. Contains 167570 sequences.

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