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 A332714 #27 Nov 14 2024 10:07:45 %S A332714 1,5,75,4632,1076492,963182263,3317770165381,43809083383524391, %T A332714 2209112327971366587064,424273291301040427702718109, %U A332714 309707064465485300360403957730000,857932019835933358500355409793382735115,9007779604382069542348587670082074125962102375 %N A332714 The number of placements of zero or more dominoes on the n X n grid where the number of vertical dominoes differs from the number of horizontal dominoes by at most 1. %C A332714 The number of play positions of n X n Domineering. Domineering is a game in which players take turns placing dominoes on a grid, one player placing vertically and the other horizontally until the player to place cannot place a domino. %H A332714 Bjorn Huntemann, Svenja Huntemann, and Neil A. McKay, <a href="http://www2.unb.ca/~nmckay/oeis/CountingDomineering.sagews">SageMath code for Counting Domineering Positions</a> %H A332714 Svenja Huntemann and Neil A. McKay, <a href="https://arxiv.org/abs/1909.12419">Counting Domineering Positions</a>, arXiv:1909.12419 [math.CO], 2019. %o A332714 (Sage) # See Bjorn Huntemann, Svenja Huntemann, Neil A. McKay link. %Y A332714 Cf. A028420 (the number of placements of dominoes on an n X n grid). %Y A332714 Cf. A330658, A332865. %K A332714 nonn %O A332714 1,2 %A A332714 _Neil A. McKay_, Feb 20 2020 %E A332714 a(11)-a(13) from _Andrew Howroyd_, Feb 20 2020