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A304321 as a simple table

na(n)
11
21
31
41
59
61
71
849
9148
101
111
12225
136877
143493
151
161
17961
18229000
191854545
20106431
211
221
233969
246737401
25612243125
26807478656
273950832
281
291
3016129
31188580028
32172342090401
333367384031526
34514798204147
35172325014
361
371
3865025
395170118437
4045770504571813
4111657788116175751
4233056423981177346
43451182323794896
448617033285
451

[1,1,1,1,9,1,1,49,148,1,1,225,6877,3493,1,1,961,
 229000,1854545,106431,1,1,3969,6737401,612243125,
 807478656,3950832,1,1,16129,188580028,
 172342090401,3367384031526,514798204147,172325014,
 1,1,65025,5170118437,45770504571813,
 11657788116175751,33056423981177346,
 451182323794896,8617033285,1]