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A139748 as a simple table

na(n)
00
10
20
31
44
510
620
735
857
993
10165
11330
12715
131574
143381
156995
1613990
1727370
1853143
19103702
20204820
21409640
22826045
231669801
243368259
256765175
2613530350
2726985675
2853774932
29107232053
30214146295
31428292590
32857417220
331717012749
343437550076

[0,0,0,1,4,10,20,35,57,93,165,330,715,1574,3381,
 6995,13990,27370,53143,103702,204820,409640,
 826045,1669801,3368259,6765175,13530350,26985675,
 53774932,107232053,214146295,428292590,857417220,
 1717012749,3437550076]