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A181671 as a simple table

na(n)
11
210
372
4559
54459
636960
7316066
82760321
924491666
10220098288
111998400235
1218299775876
13168773875190
141566017986235
1514606736768049
16136860923837558
171287462389890262

[1,10,72,559,4459,36960,316066,2760321,24491666,
 220098288,1998400235,18299775876,168773875190,
 1566017986235,14606736768049,136860923837558,
 1287462389890262]