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A180669 as a simple table

na(n)
00
10
21
37
426
572
6171
7371
8760
91500
102889
115475
1210266
1319116
1435435
1565495
16120832
17222664
18410017
19754671
201388650
212554784
224699707
238644907
2415901336
2529248068
2653796617
2798948523
28181995914
29334743972
30615691547

[0,0,1,7,26,72,171,371,760,1500,2889,5475,10266,
 19116,35435,65495,120832,222664,410017,754671,
 1388650,2554784,4699707,8644907,15901336,29248068,
 53796617,98948523,181995914,334743972,615691547]