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A090319 as a simple table

na(n)
01
14
214
352
4217
51040
65768
736992
8272584
92285184
1021550656
11226071744
122611146384
1332911082496
14449243785728
156598780563456
16103734755882496
171737181702840320
1830866291090657280
19579859321408266240

[1,4,14,52,217,1040,5768,36992,272584,2285184,
 21550656,226071744,2611146384,32911082496,
 449243785728,6598780563456,103734755882496,
 1737181702840320,30866291090657280,
 579859321408266240]