A165390 - OEIS

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A165390

Number of slanted 7Xn (i=1..7)X(j=i..n+i-1) 1..4 arrays with all 1s connected, all 2s connected, all 3s connected, all 4s connected, 1 in the upper left corner, 2 in the upper right corner, 3 in the lower left corner, and 4 in the lower right corner

11, 296, 24225, 993780, 33107075, 948440084, 25614600093, 655460808868 (list; graph; refs; listen; history; internal format)

	OFFSET	`2,1`
	EXAMPLE	`One solution for n=8` `...1.1.2.2.2.2.2.2............` `.....1.1.2.2.3.3.2.2..........` `.......1.2.3.3.3.3.2.2........` `.........3.3.3.3.3.3.3.4......` `...........3.3.3.3.3.4.4.4....` `.............3.3.3.4.4.4.4.4..` `...............3.4.4.4.4.4.4.4`
	CROSSREFS	`Sequence in context: A064758 A030428 A133515 * A067424 A001538 A101269` `Adjacent sequences: A165387 A165388 A165389 * A165391 A165392 A165393`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net) Sep 17 2009`

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.