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A203550 as a simple table

na(n)
11
21
31
41
525
61
71
8430
9430
101
111
124773
1332920
144773
151
161
1748046
181525965
191525965
2048046
211
221
23504464
2467657718
25276550270
2667657718
27504464
281
291
305448482
313251156731
3248904258294
3348904258294
343251156731
355448482
361
371
3858647145

[1,1,1,1,25,1,1,430,430,1,1,4773,32920,4773,1,1,
 48046,1525965,1525965,48046,1,1,504464,67657718,
 276550270,67657718,504464,1,1,5448482,3251156731,
 48904258294,48904258294,3251156731,5448482,1,1,
 58647145]