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A323568 as a simple table

na(n)
01
14
231
3380
46017
5119812
62863903
779849340
82544494081
991218404356
103633458059039
11159202837770620
127609742731484033
13394049923598413828
1421974409170191973407
151312944562859473313660
1683676651905307684333569
175666190077265731685365764
18406257664391186624860008991
1930746316355830218639758848380
202449407313095934366223281388417
21204888804298166571602163435568132

[1,4,31,380,6017,119812,2863903,79849340,
 2544494081,91218404356,3633458059039,
 159202837770620,7609742731484033,
 394049923598413828,21974409170191973407,
 1312944562859473313660,83676651905307684333569,
 5666190077265731685365764,
 406257664391186624860008991,
 30746316355830218639758848380,
 2449407313095934366223281388417,
 204888804298166571602163435568132]