id:A069362 - OEIS Search Results

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Number of 4 X n binary arrays with a path of adjacent 1's from top row to bottom row.

+0
11

1, 41, 1041, 22193, 433809, 8057905, 144769425, 2541013617, 43843180113, 746691527217, 12588144461329, 210502738714097, 3497001564166609, 57781030561348017, 950437243856526737, 15574913193760097649 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`G.f.: x(-8x^3-16x^2+6x+1)/[(1-16x)(8x^4+80x^3-74x^2+19x-1)].`
	CROSSREFS	`Cf. 1 X n A000225, 2 X n A005061, n X 2 A001333, 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: A104349 A091314 A059762 this_sequence A016093 A130639 A014937` `Adjacent sequences: A069359 A069360 A069361 this_sequence A069363 A069364 A069365`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net), Mar 22 2002.`

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Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

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