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A138314 as a simple table

na(n)
01
11
21
32
45
512
637
7129
8465
91912
108449
1139481
12200081
131069470
146043361
1536120082
16226063729
171484564600
1810184907985
1972814137773
20542009067393
214188018707130
2233562233856177
23278441210021464
242387929437251657

[1,1,1,2,5,12,37,129,465,1912,8449,39481,200081,
 1069470,6043361,36120082,226063729,1484564600,
 10184907985,72814137773,542009067393,
 4188018707130,33562233856177,278441210021464,
 2387929437251657]