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A199476 Triangle read by rows: number of inequivalent classes of true tripartite entanglement systems of type 2 X M X N, for 2 <= N <= M. 1
2, 2, 6, 1, 5, 16, 1, 2, 12, 34, 1, 1, 6, 28, 77, 1, 1, 2, 14, 61, 157, 1, 1, 1, 6, 34, 133, 328, 1, 1, 1, 2, 15, 74, 277, 655, 1, 1, 1, 1, 6, 36, 165, 572, 1309 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

2,1

REFERENCES

XiKun Li, JunLi Li, Bin Liu and CongFeng Qiao, The parametric symmetry and numbers of the entangled class of 2 × M × N system, SCIENCE CHINA PHYSICS, MECHANICS & ASTRONOMY, Volume 54, Number 8, 1471-1475, DOI: 10.1007/s11433-011-4395-9; http://www.springerlink.com/content/24g51u87527017u7/

LINKS

Table of n, a(n) for n=2..46.

EXAMPLE

Triangle begins:

2

2 6

1 5 16

1 2 12 34

1 1 6 28 77

1 1 2 14 61 157

1 1 1 6 34 133 328

1 1 1 2 15 74 277 655

1 1 1 1 6 36 165 572 1309

...

This may also be regarded as a square array, allowing values on N >= M, in which case it begins like this:

2 2 1 1 1 1 1 1 1 ...

2 6 5 2 1 1 1 1 1 ...

1 5 16 12 6 2 1 1 1 ...

1 2 12 34 28 14 6 2 1 ...

1 1 6 28 77 61 34 15 6 ...

1 1 2 14 61 157 133 74 36 ...

1 1 1 6 34 133 328 277 165 ...

1 1 1 2 15 74 277 655 572 ...

1 1 1 1 6 36 165 572 1309 ...

...

CROSSREFS

Cf. A199477.

Sequence in context: A047916 A101207 A186435 * A209124 A155818 A010245

Adjacent sequences:  A199473 A199474 A199475 * A199477 A199478 A199479

KEYWORD

nonn,tabl

AUTHOR

N. J. A. Sloane, Nov 06 2011

STATUS

approved

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Last modified September 2 05:18 EDT 2014. Contains 246322 sequences.