This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A140859 #39 Mar 20 2024 03:02:04 %S A140859 1,1,2,2,3,4,5,6,6,6,9,10,9,12,13,10,14,16,13,18,19,14,21,22,17,24,25, %T A140859 18,25,28,21,30 %N A140859 Border-domination number of queen graph for n X n board. %D A140859 Teresa W. Haynes, Stephen T. Hedetniemi and Michael A. Henning (eds.), Structures of Domination in Graphs, Springer, 2021. See Table 13 on p. 368. %H A140859 Andy Huchala, <a href="/A140859/a140859.py.txt">Python program</a>. %H A140859 A. Sinko and P. J. Slater, <a href="http://dx.doi.org/10.1016/j.disc.2007.08.065">Queen's domination using border squares and (A,B)-restricted domination</a>, Discrete Math., 308 (2008), 4822-4828. %F A140859 2*n - 9/2 - sqrt(8*n^2 - 40*n + 49)/2 <= a(n) <= n-2 for all n > 3, from Sinko and Slater paper. - _Andy Huchala_, Mar 09 2024 %Y A140859 Cf. A075458. %K A140859 nonn,more %O A140859 1,3 %A A140859 _N. J. A. Sloane_, Sep 04 2008 %E A140859 a(14)-a(24) from "Structures of Domination in Graphs" added by _Andrey Zabolotskiy_, Sep 02 2021 %E A140859 a(25)-a(31) from _Andy Huchala_, Mar 05 2024 %E A140859 a(32) from _Andy Huchala_, Mar 20 2024