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A292708 as a simple table

na(n)
14
214
3440
414115134
5466518785395590988060
616843102905928252175005299732280541221280287736370800875201510

[4,14,440,14115134,466518785395590988060,
 16843102905928252175005299732280541221280287736370\
 800875201510]