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A046729 as a simple table

na(n)
00
14
220
3120
4696
54060
623660
7137904
8803760
94684660
1027304196
11159140520
12927538920
135406093004
1431509019100
15183648021600
161070379110496
176238626641380
1836361380737780
19211929657785304
201235216565974040
217199369738058940
2241961001862379596
23244566641436218640

[0,4,20,120,696,4060,23660,137904,803760,4684660,
 27304196,159140520,927538920,5406093004,
 31509019100,183648021600,1070379110496,
 6238626641380,36361380737780,211929657785304,
 1235216565974040,7199369738058940,
 41961001862379596,244566641436218640]