Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
%I #14 Jun 11 2022 03:33:12
%S 1,0,0,1,0,0,0,4,12,20,28,67,208,484,753,750,679,2320,10020,30548,
%T 68832,108744,65229,-236055,-739289,101404,7201383,26255714,43505098,
%U -17552274,-291420026,-674637832,27442,4426763291,12910062402,9737827437,-49131891078,-184470253912,-183956055539,621518352427,2660084937207,3075466954690,-7500763944932,-34822638005931,-38841312202313,104412348649015,448320847685638
%N Large-q series expansion for the exponential of the corner free energy of the square-lattice zero-temperature Potts antiferromagnet, in terms of the variable z = 1/(q - 1).
%H Andrey Zabolotskiy, <a href="/A238836/b238836.txt">Table of n, a(n) for n = 0..78</a> (from Jacobsen 2010)
%H Jesper Lykke Jacobsen, <a href="https://doi.org/10.1088/1751-8113/43/31/315002">Bulk, surface and corner free-energy series for the chromatic polynomial on the square and triangular lattices</a>, J. Phys. A: Math. Theor., 43 (2010), 315002; arXiv:<a href="https://arxiv.org/abs/1005.3609">1005.3609</a> [cond-mat.stat-mech], 2010.
%H J. Salas and A. D. Sokal, <a href="http://arxiv.org/abs/0711.1738">Transfer Matrices and Partition-Function Zeros for Antiferromagnetic Potts Models. V. Further Results for the Square-Lattice Chromatic Polynomial</a>, J. Stat. Phys. 135 (2009) 279-373; arXiv:0711.1738 [cond-mat.stat-mech], 2007-2009. Mentions this sequence.
%Y Cf. A090673, A238835.
%K sign
%O 0,8
%A _N. J. A. Sloane_, Mar 14 2014
%E Name corrected by _Andrey Zabolotskiy_, Feb 12 2022