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A111028
Square array T(n,m) of Witten index of a square n*m grid, read by antidiagonals.
0
1, 1, 1, 1, -1, 1, 1, 1, 1, 1, 1, 3, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, -1, 1, 7, 1, -1, 1, 1, 1, 4, 1, 1, 4, 1, 1, 1, 3, 1, 3, -9, 3, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, -1, 4, 7, 1, 14, 1, 7, 4, -1, 1
OFFSET
1,12
LINKS
P. Fendley, K. Schoutens and J. van Eerten, Hard squares at negative activity, arXiv:cond-mat/0408497 [cond-mat.stat-mech], 2004; Jour. Phys. A: Math Gen. 38 (2005) 315.
EXAMPLE
The array begins:
1 1 1 1 1 ...
1 -1 1 3 1 ...
1 1 4 1 1 ...
1 3 1 7 1 ...
1 1 1 1 -9 ...
...
CROSSREFS
Sequence in context: A367076 A078070 A254745 * A201162 A096646 A306234
KEYWORD
sign,tabl,more
AUTHOR
Floor van Lamoen, Oct 05 2005
EXTENSIONS
Name edited by Michel Marcus, Sep 09 2017
STATUS
approved