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A302605 as a simple table

na(n)
00
11
24
328
4272
53384
651300
7917064
818884672
9440168832
1011454902500
11329208395264
1210355322975120
13353851897861760
1413052503620917124
15516917167506777600
1621875427250996723968
17985164766018898243584
1847043119138733155306052
192374168079889664129576960

[0,1,4,28,272,3384,51300,917064,18884672,
 440168832,11454902500,329208395264,10355322975120,
 353851897861760,13052503620917124,
 516917167506777600,21875427250996723968,
 985164766018898243584,47043119138733155306052,
 2374168079889664129576960]