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A026124 as a simple table

na(n)
21
32
47
520
659
7170
8489
91400
104002
1111428
1232626
1393160
14266136
15760800
162176644
176232896
1817864841
1951253794
20147188535
21423098404
221217371023
233505992050
2410106384621
2529158627592
2684200265555
27243345531806
28703858089717

[1,2,7,20,59,170,489,1400,4002,11428,32626,93160,
 266136,760800,2176644,6232896,17864841,51253794,
 147188535,423098404,1217371023,3505992050,
 10106384621,29158627592,84200265555,243345531806,
 703858089717]