id:A048885 - OEIS Search Results

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Number of nonisomorphic orthogonal arrays OA(4n,4n-1,2,2).

+0
3

1, 1, 1, 5, 3, 130, 7570 (list; graph; listen)

	OFFSET	`1,4`
	REFERENCES	`A. S. Hedayat, N. J. A. Sloane and J. Stufken, Orthogonal Arrays, Springer-Verlag, NY, 1999, see Table 7.37 page 165.`
	CROSSREFS	`Cf. A007299.` `Sequence in context: A124013 A007299 A109254 this_sequence A002208 A100653 A121021` `Adjacent sequences: A048882 A048883 A048884 this_sequence A048886 A048887 A048888`
	KEYWORD	`nonn,nice,hard`
	AUTHOR	`njas`
	EXTENSIONS	`a(7) computed by njas.`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.