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A019302 as a simple table

na(n)
00
11
23
36
411
520
636
764
8115
9216
10430
11892
121872
133888
147920
1515840
1631315
1761744
18122418
19245348
20497650
211019032
222096680
234312224
248826320
2517925376
2636070128
2771915616
28142239056
29279671360
30548106816
311073741824
322108053075

[0,1,3,6,11,20,36,64,115,216,430,892,1872,3888,
 7920,15840,31315,61744,122418,245348,497650,
 1019032,2096680,4312224,8826320,17925376,36070128,
 71915616,142239056,279671360,548106816,1073741824,
 2108053075]