A049083 Number of dual atoms in lattice Lambda'_{2^n} of putative parameter sets for orthogonal arrays with 2^n runs.

0, 1, 1, 1, 2, 3, 11, 21, 72, 144521

Offset

0,5

References

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

Links

Table of n, a(n) for n=0..9.

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: A023182 A302310 A295958 * A305719 A002778 A028816

Adjacent sequences: A049080 A049081 A049082 * A049084 A049085 A049086

Keyword

nonn,nice

Author

N. J. A. Sloane

Status

approved