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A297079 as a simple table

na(n)
14
212
330
496
5286
6848
72620
87964
924332
1074740
11228968
12702656
132157520
146622672
1520336808
1662452688
17191784960
18588994592
191808876976
205555328528
2117061469024
2252399035584
23160927919584
24494243002176
251517923151392
264661861611200

[4,12,30,96,286,848,2620,7964,24332,74740,228968,
 702656,2157520,6622672,20336808,62452688,
 191784960,588994592,1808876976,5555328528,
 17061469024,52399035584,160927919584,494243002176,
 1517923151392,4661861611200]