id:A067231 - OEIS Search Results

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Number of Young tableaux with n=i*j cells and type i*j matrices. Here i and j is i=>j.

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1, 1, 1, 3, 1, 6, 1, 15, 43, 43, 1, 595, 1, 430, 6007, 25455, 1, 92379, 1, 1679601, 1385671, 58787, 1, 163809451, 701149021, 742901, 414315331, 13675080331, 1, 404155466746, 1, 1489913284351, 145862174641, 129644791, 278607172289161 (list; graph; listen)

	OFFSET	`1,4`
	FORMULA	`a(n) = number of ways to arrange the numbers 1, 2, .., n=ij in ij matrices so that each row and each column is increasing. Here i and j satisfy i >= j.`
	CROSSREFS	`Cf. A000085, A060854.` `Sequence in context: A145063 A007650 A165552 this_sequence A145791 A130302 A134546` `Adjacent sequences: A067228 A067229 A067230 this_sequence A067232 A067233 A067234`
	KEYWORD	`easy,nonn`
	AUTHOR	`Naohiro Nomoto (n_nomoto(AT)yabumi.com), Feb 20 2002`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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