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A208021 as a simple table

na(n)
11
21
31
42
51
62
75
87
97
105
1115
1287
13270
1487
1515
1652
171657
1827093
1927093
201657
2152
22203
2343833
245252041
2530066912
265252041
2743833
28203
29877
301515903
311688298227
3280318704605
3380318704605
341688298227
351515903
36877
374140
3865766991

[1,1,1,2,1,2,5,7,7,5,15,87,270,87,15,52,1657,
 27093,27093,1657,52,203,43833,5252041,30066912,
 5252041,43833,203,877,1515903,1688298227,
 80318704605,80318704605,1688298227,1515903,877,
 4140,65766991]