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%I #29 Dec 14 2025 21:19:45
%S 2,1,1,3,15,91,647,5245,48287,625817,36494225,6862660263,
%T 1568810412647,390685537439419,106288930934710885
%N Row sums of triangle A387098.
%C a(n) is the total number of ways to place non-attacking kings on an n X n board such that each row and each column contains the same number of kings.
%F a(n) = Sum_{k=0..floor(n/4)+[n=1]} A387098(n, k).
%Y Cf. A387098.
%K nonn,more
%O 1,1
%A _Hamidreza Maleki Tirabadi_, Dec 07 2025