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A147372 as a simple table

na(n)
11
21
31
41
51
61
71
81
94
107
1114
1221
1340
1479
15252
16611
172359
186199
1923158
2070484
21325136
221222235
236869095
2429506240
25189032773
26936666179

[1,1,1,1,1,1,1,1,4,7,14,21,40,79,252,611,2359,
 6199,23158,70484,325136,1222235,6869095,29506240,
 189032773,936666179]