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A049083 Number of dual atoms in lattice Lambda'_{2^n} of putative parameter sets for orthogonal arrays with 2^n runs. +0
1
0, 1, 1, 1, 2, 3, 11, 21, 72, 144521 (list; graph; listen)
OFFSET

0,5

REFERENCES

Calculated by M. Colgan, E. M. Rains and N. J. A. Sloane, August 1999.

LINKS

E. M. Rains, N. J. A. Sloane and J. Stufken, The Lattice of N-Run Orthogonal Arrays, J. Stat. Planning Inference, 102 (2002), 477-500 (Abstract, pdf, ps)

CROSSREFS

Sequence in context: A004687 A097895 A023182 this_sequence A002778 A028816 A128921

Adjacent sequences: A049080 A049081 A049082 this_sequence A049084 A049085 A049086

KEYWORD

nonn,nice

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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


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