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A141688 as a simple table

na(n)
11
21
31
41
56
61
71
826
926
101
111
1299
13416
1499
151
161
17352
185407
195407
20352
211
221
231200
2462616
25227094
2662616
271200
281
291
303977
31673728
328212854
338212854
34673728
353977
361
371
3812918
396889153
40269486766
41903413940
42269486766
436889153
4412918
451
461
4741338
4867863290
498256432767
5088493861004
5188493861004
528256432767
5367863290
5441338
551

[1,1,1,1,6,1,1,26,26,1,1,99,416,99,1,1,352,5407,
 5407,352,1,1,1200,62616,227094,62616,1200,1,1,
 3977,673728,8212854,8212854,673728,3977,1,1,12918,
 6889153,269486766,903413940,269486766,6889153,
 12918,1,1,41338,67863290,8256432767,88493861004,
 88493861004,8256432767,67863290,41338,1]