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A111414 as a simple table

na(n)
02
16
210
340
480
5250
6510
71890
84270
913738
1030630
11101960
12234864
13705046
141580578
155136840
1611991928
1736095322
1882990606
19255579576
20595920680
211719038038
223926998938
2311665004238
2426978093154
2575938910058
26172678519950
27489262646480
281114189211016

[2,6,10,40,80,250,510,1890,4270,13738,30630,
 101960,234864,705046,1580578,5136840,11991928,
 36095322,82990606,255579576,595920680,1719038038,
 3926998938,11665004238,26978093154,75938910058,
 172678519950,489262646480,1114189211016]