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A146267 as a simple table

na(n)
11
21
31
41
53
69
720
859
9238
101339
118950
1263227
13541368
145931901
1582015459
161400527040
1728248253548
18677346206953
1919987158806408
20732068950428064
2133003291678037712
221801673455589720405
23118568477345258796542

[1,1,1,1,3,9,20,59,238,1339,8950,63227,541368,
 5931901,82015459,1400527040,28248253548,
 677346206953,19987158806408,732068950428064,
 33003291678037712,1801673455589720405,
 118568477345258796542]