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A231305 as a simple table

na(n)
00
11
264
3730
44160
516355
650816
7134004
8312960
9665445
101312960
112437006
124298944
137263815
1411828480
1518654440
1628605696
1742792009
1862617920
1989837890
20126617920
21175604011
22239997824
23323639900
24431100800
25567780525
26740016576
27955201014
281221906880

[0,1,64,730,4160,16355,50816,134004,312960,665445,
 1312960,2437006,4298944,7263815,11828480,18654440,
 28605696,42792009,62617920,89837890,126617920,
 175604011,239997824,323639900,431100800,567780525,
 740016576,955201014,1221906880]