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A296997 as a simple table

na(n)
10
24
378
4544
52260
67068
718298
841472
985032
10161300
11287430
12486624
13789308
141234604
151871730
162761728
173979088
185613732
197772862
2010583200
2114193060
2218774844
2324527338
2431678464
2540487800
2651249588
2764295478
2879997792
2998772492
30121082700
31147441890
32178417664

[0,4,78,544,2260,7068,18298,41472,85032,161300,
 287430,486624,789308,1234604,1871730,2761728,
 3979088,5613732,7772862,10583200,14193060,
 18774844,24527338,31678464,40487800,51249588,
 64295478,79997792,98772492,121082700,147441890,
 178417664]