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%I #5 Feb 27 2020 07:05:01
%S 1,1,2,4,5,7,9,11,13,15
%N Upper irredundance number for queens graph Q_n on n^2 nodes.
%H Matthew D. Kearse and Peter B. Gibbons, <a href="http://ajc.maths.uq.edu.au/pdf/23/ocr-ajc-v23-p253.pdf">Computational Methods and New Results for Chessboard Problems</a>, Australasian Journal of Combinatorics 23 (2001), 253-284.
%H Matthew D. Kearse and Peter B. Gibbons, <a href="https://doi.org/10.1016/S0012-365X(01)00467-8">A new lower bound on upper irredundance in the queens' graph</a>, Discrete Math., 256 (2002), 225-242.
%Y Cf. A075709.
%K nonn,more
%O 1,3
%A Peter Gibbons (peter-g(AT)cs.auckland.ac.nz), Oct 13 2002