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A257620 as a simple table

na(n)
01
13
23
39
436
59
627
7297
8297
927
1081
112106
125346
132106
1481
15243
1613851
1773386
1873386
1913851
20243
21729
2287480
23868239
241761264
25868239
2687480
27729
282187
29540189
309388791
3134158753
3234158753
339388791
34540189
352187
366561
373293622
3895843088
39578903274
401024762590
41578903274
4295843088
433293622
446561

[1,3,3,9,36,9,27,297,297,27,81,2106,5346,2106,81,
 243,13851,73386,73386,13851,243,729,87480,868239,
 1761264,868239,87480,729,2187,540189,9388791,
 34158753,34158753,9388791,540189,2187,6561,
 3293622,95843088,578903274,1024762590,578903274,
 95843088,3293622,6561]