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A146931 as a simple table

na(n)
11
21
31
41
51
61
71
83
97
1014
1122
1237
1379
14162
15380
16937
172496
187209
1922236
2073304
21252500
22902438
233477063
2413836097
2560384897
26273397251
271352635265
287039542506
2939611966803

[1,1,1,1,1,1,1,3,7,14,22,37,79,162,380,937,2496,
 7209,22236,73304,252500,902438,3477063,13836097,
 60384897,273397251,1352635265,7039542506,
 39611966803]