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A006746 as a simple table

na(n)
10
20
30
41
52
66
79
823
938
1090
11147
12341
13564
141294
152148
164896
178195
1818612
1931349
2070983
21120357
22271921
23463712
241045559
251792582
264034832
276950579
2815619507
2927023509
3060638559
31105320716
32236006955
33411364068
34920626423
351609836928

[0,0,0,1,2,6,9,23,38,90,147,341,564,1294,2148,
 4896,8195,18612,31349,70983,120357,271921,463712,
 1045559,1792582,4034832,6950579,15619507,27023509,
 60638559,105320716,236006955,411364068,920626423,
 1609836928]