Generating function
$$U_{1127}(x, y) = 2 x \left(y + 1\right)^{6} + \left(y + 1\right)^{3} \sqrt{4 x^{2} \left(y + 1\right)^{6} + 1}$$
Explicit formula
$$T_{1127}(n, m, k) = \begin{cases}\frac{k {\binom{3 k + 3 n}{m}} {\binom{\frac{k}{2} + \frac{3 n}{2} + \frac{1}{2}}{n}} {\binom{k + 3 n + 1}{\frac{k}{2} + \frac{3 n}{2} + \frac{1}{2}}}}{\left(k + n\right) {\binom{k + n + 1}{\frac{k}{2} + \frac{n}{2} + \frac{1}{2}}}}&\text{if (n+k)%2=1} ,\ \\\frac{k {\binom{\frac{k}{2} + \frac{3 n}{2}}{n}} {\binom{k + 3 n}{\frac{k}{2} + \frac{3 n}{2}}} {\binom{3 k + 3 n}{m}}}{\left(k + n\right) {\binom{k + n}{\frac{k}{2} + \frac{n}{2}}}}&\text{if (n+k)%2=0} \end{cases} $$
Data table
1 3 3 1 0 0 0
3 18 45 6 45 18 3
70/3 21 84 196 294 294 196
105 126 693 231 51975 8316 9702
6006/5 18018 126126 546546 1639638 18036018/5 6012006
6006 108108 918918 4900896 1837836 51459408 111495384
554268/7 1662804 1662804 10531092 47389914 1611257076 4296685536
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