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A117866 as a simple table

na(n)
16
212
354
496
5390
6684
72742
84800
919206
1033612
11134454
12235296
13941190
141647084
156588342
1611529600
1746118406
1880707212
19322828854
20564950496
212259801990
223954653484
2315818613942
2427682574400
25110730297606
26193778020812
27775112083254
281356446145696

[6,12,54,96,390,684,2742,4800,19206,33612,134454,
 235296,941190,1647084,6588342,11529600,46118406,
 80707212,322828854,564950496,2259801990,
 3954653484,15818613942,27682574400,110730297606,
 193778020812,775112083254,1356446145696]