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A003939 as a simple table

na(n)
11451520
24585351680
34106059776000
4228501000000000
5273457218604953600
69077005607176765440
754025731402499584000
83669292720793456064000
9122796979335906113871360
1019266960106724096212992000

[1451520,4585351680,4106059776000,228501000000000,
 273457218604953600,9077005607176765440,
 54025731402499584000,3669292720793456064000,
 122796979335906113871360,
 19266960106724096212992000]