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A129331 as a simple table

na(n)
00
11
28
360
4464
53780
632568
7296492
82845088
928695060
10303334920
113351877628
1238622668400
13463036981732
145764038605528
1574365952622540
16992720923710272
1713690497077256628
18194777994524434344
192855149354656290716

[0,1,8,60,464,3780,32568,296492,2845088,28695060,
 303334920,3351877628,38622668400,463036981732,
 5764038605528,74365952622540,992720923710272,
 13690497077256628,194777994524434344,
 2855149354656290716]