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A181307 as a simple table

na(n)
01
12
26
31
418
56
654
727
81
9162
10108
1110
12486
13405
1464
151
161458
171458
18334
1914
204374
215103
221549
23117
241
2513122
2617496
276652
28760
2918
3039366
3159049
3227064
334238
34186
351
36118098
37196830
38105796
3921324
401450
4122
42354294
43649539
44401041
4599646
469480
47271

[1,2,6,1,18,6,54,27,1,162,108,10,486,405,64,1,
 1458,1458,334,14,4374,5103,1549,117,1,13122,17496,
 6652,760,18,39366,59049,27064,4238,186,1,118098,
 196830,105796,21324,1450,22,354294,649539,401041,
 99646,9480,271]