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A246481 as a simple table

na(n)
12
214
3132
4484
51734
64386
710376
820840
939690
1068950
11115212
12181644
13278222
14409514
15589584
16824656
171133586
181524510
192021780
202635700
213396822
224317874
235436312
246767544
258356634
2610221926
2712416796
2814962780
2917922270
3021320250

[2,14,132,484,1734,4386,10376,20840,39690,68950,
 115212,181644,278222,409514,589584,824656,1133586,
 1524510,2021780,2635700,3396822,4317874,5436312,
 6767544,8356634,10221926,12416796,14962780,
 17922270,21320250]