A054103 T(n,n-3), array T as in A054098.
1, 14, 30, 148, 744, 4610, 32870, 266972, 2431608, 24554194, 272289630, 3289836260, 43017800312, 605289111698, 9119314568454, 146474344313980, 2498617856687400
Offset: 3
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