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A155491 as a simple table

na(n)
01
11
21
31
412
51
61
778
878
91
101
11415
121820
13415
141
151
162031
1727410
1827410
192031
201
211
229534
23330225
24959350
25330225
269534
271
281
2943660
303488884
3123935450
3223935450
333488884
3443660
351
361
37196569
3833888576
39484631574
401120179060
41484631574
4233888576
43196569
441

[1,1,1,1,12,1,1,78,78,1,1,415,1820,415,1,1,2031,
 27410,27410,2031,1,1,9534,330225,959350,330225,
 9534,1,1,43660,3488884,23935450,23935450,3488884,
 43660,1,1,196569,33888576,484631574,1120179060,
 484631574,33888576,196569,1]