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A318863 as a simple table

na(n)
60
71
81
93
108
1122
1260
13168
14466
151306
163677
1710400
1829503
1983964
20239523
21684855
221961933
235630300
2416182535
2546576693
26134225427
27387254945
281118433179
293233228736
309354963666
3127089288339
3278501221909
33227643444368
34660560681614
351917918979943
365571738217340

[0,1,1,3,8,22,60,168,466,1306,3677,10400,29503,
 83964,239523,684855,1961933,5630300,16182535,
 46576693,134225427,387254945,1118433179,
 3233228736,9354963666,27089288339,78501221909,
 227643444368,660560681614,1917918979943,
 5571738217340]