id:A069430 - OEIS Search Results

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Half the number of 4 X n binary arrays with no path of adjacent 1's or adjacent 0's from top row to bottom row.

+0
1

7, 88, 1074, 13002, 157058, 1896074, 22886754, 276246170, 3334295986, 40244915946, 485755429442, 5863058792506, 70767006224978, 854156391897098, 10309651065637602, 124437288171423322 (list; graph; listen)

	OFFSET	`1,1`
	CROSSREFS	`Cf. 2 X n A000079, n X 1 A000225, vertical path of 1 A069361-A069395, vertical paths of 0+1 A069396-A069416, vertical path of 1 not 0 A069417-A069428, no vertical paths A069429-A069447, no horizontal or vertical paths A069448-A069452.` `Sequence in context: A132486 A155465 A137143 this_sequence A020564 A006291 A054678` `Adjacent sequences: A069427 A069428 A069429 this_sequence A069431 A069432 A069433`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Mar 22 2002.`

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

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