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A306511 as a simple table

na(n)
00
10
21
34
419
599
6603
74248
834115
9307875
103085203
1133993870
12408482695
135316309607
1474499953255
151118421967520
1617907571955927
17304619809031127
185486197279305911
19104289196264058030
202086706157642260387
2143838287730208552691
22964790364323910060691

[0,0,1,4,19,99,603,4248,34115,307875,3085203,
 33993870,408482695,5316309607,74499953255,
 1118421967520,17907571955927,304619809031127,
 5486197279305911,104289196264058030,
 2086706157642260387,43838287730208552691,
 964790364323910060691]