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A056397 as a simple table

na(n)
10
20
31
44
58
650
754
8284
9525
102370
112872
1222748
1321866
14131750
15298792
16904918
171341518
1810745090
1910748218
2072889084
21145274556
22522819590
23713023210
245892634240
257059926605
2635300985550
2770604008204

[0,0,1,4,8,50,54,284,525,2370,2872,22748,21866,
 131750,298792,904918,1341518,10745090,10748218,
 72889084,145274556,522819590,713023210,5892634240,
 7059926605,35300985550,70604008204]