id:A033878 - OEIS Search Results

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Triangular array associated with Schroeder numbers.

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1, 1, 1, 1, 3, 2, 1, 5, 10, 6, 1, 7, 22, 38, 22, 1, 9, 38, 98, 158, 90, 1, 11, 58, 194, 450, 698, 394, 1, 13, 82, 334, 978, 2126, 3218, 1806, 1, 15, 110, 526, 1838, 4942, 10286, 15310, 8558, 1, 17, 142, 778, 3142, 9922, 25150, 50746, 74614, 41586, 1, 19, 178 (list; table; graph; listen)

	OFFSET	`0,5`
	LINKS	`E. Pergola and R. A. Sulanke, Schroeder Triangles, Paths and Parallelogram Polyominoes, J. Integer Sequences, 1 (1998), #98.1.7.`
	CROSSREFS	`Sequence in context: A021912 A114597 A050165 this_sequence A144061 A085792 A108123` `Adjacent sequences: A033875 A033876 A033877 this_sequence A033879 A033880 A033881`
	KEYWORD	`nonn,tabl,easy`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`
	EXTENSIONS	`Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Mar 23 2003`

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

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