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A204613 as a simple table

na(n)
1907
214199
3205117
43084029
545645661
6681254361
710133992449
8150976448169
92247899446625
1033478224206409
11498544006062097
127424476991609881
13110565854451215521
141646569684719609385
1524520996268226201073

[907,14199,205117,3084029,45645661,681254361,
 10133992449,150976448169,2247899446625,
 33478224206409,498544006062097,7424476991609881,
 110565854451215521,1646569684719609385,
 24520996268226201073]