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A211065 as a simple table

na(n)
10
26
340
496
5288
6486
71056
81536
92800
103750
116120
127776
1311760
1414406
1520608
1624576
1733696
1839366
1952200
2060000
2177440
2287846
23110880
24124416
25154128
26171366
27208936
28230496
29277200
30303750
31360960
32393216
33462400
34501126
35583848

[0,6,40,96,288,486,1056,1536,2800,3750,6120,7776,
 11760,14406,20608,24576,33696,39366,52200,60000,
 77440,87846,110880,124416,154128,171366,208936,
 230496,277200,303750,360960,393216,462400,501126,
 583848]