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A228697 as a simple table

na(n)
01
10
20
31
43
538
6730
720670
8781578
937885204
102289786624
11168879532980
1214930452838620
131558773675667164
14189751596502711412
1526640166205940265342
164272887377701537747810
17776487144927243427031040
18158705790134274513564693472
1936246543562488282624570636306

[1,0,0,1,3,38,730,20670,781578,37885204,
 2289786624,168879532980,14930452838620,
 1558773675667164,189751596502711412,
 26640166205940265342,4272887377701537747810,
 776487144927243427031040,
 158705790134274513564693472,
 36246543562488282624570636306]