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A056416 as a simple table

na(n)
10
20
31
46
59
656
751
8258
9380
101500
111611
1212298
1310245
1457108
15121721
16346146
17474489
183589534
193397143
2021984804
2141570773
22142619388
23186027579
241476414178
251694455320
268146633638
2715690141155

[0,0,1,6,9,56,51,258,380,1500,1611,12298,10245,
 57108,121721,346146,474489,3589534,3397143,
 21984804,41570773,142619388,186027579,1476414178,
 1694455320,8146633638,15690141155]