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A281371 as a simple table

na(n)
00
10
21
336
4492
53608
618828
774760
8250352
9717984
101866558
114365580
129635472
1319639032
1438559416
1571222616
16128258496
17219619968
18370366101
19597550068
20955638824
211471571136
222253173892
233335433368
244932972864
257064391840
2610133162774
2714128072488
2819743952032
2926864847352

[0,0,1,36,492,3608,18828,74760,250352,717984,
 1866558,4365580,9635472,19639032,38559416,
 71222616,128258496,219619968,370366101,597550068,
 955638824,1471571136,2253173892,3335433368,
 4932972864,7064391840,10133162774,14128072488,
 19743952032,26864847352]