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%I #7 Sep 28 2018 04:42:34
%S 0,0,2,0,0,4,6,0,2,0,0,8,0,12,14,0,0,4,0,0,6,0,0,16,0,0,2,24,0,28,30,
%T 0,2,0,6,8,0,0,2,0,0,12,0,0,14,0,0,32,6,0,2,0,0,4,0,48,2,0,0,56,0,60,
%U 62,0,0,4,0,0,0,12,0,16,0,0,14,0,0,4,0,0,0,0,0,24
%N Dimension of the kernel of the modulo 2 Wendt matrix of dimension n.
%H Jonathan Chappelon, <a href="https://arxiv.org/abs/1702.03236">Periodic balanced binary triangles</a>, arXiv:1702.03236 [math.CO], 2016. See Table 1.
%t a[n_] := Table[Mod[Binomial[n, Abs[i-j]], 2], {i, n}, {j, n}] // NullSpace // Length;
%t Array[a, 100] (* _Jean-François Alcover_, Sep 28 2018 *)
%o (PARI) a(n) = matsize(matker(matrix(n, n, i, j, binomial(n, abs(i-j)) % 2)))[2];
%K nonn
%O 1,3
%A _Michel Marcus_, Feb 18 2017