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A207719 as a simple table

na(n)
19
281
3387
42205
512015
666339
7364869
82009223
911059965
1060888177
11335192787
121845279405
1310158455727
1455923440859
15307864679445
161694829122631
179330221332989
1851363898889337
19282763934436339
201556646681947805

[9,81,387,2205,12015,66339,364869,2009223,
 11059965,60888177,335192787,1845279405,
 10158455727,55923440859,307864679445,
 1694829122631,9330221332989,51363898889337,
 282763934436339,1556646681947805]