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A157249 as a simple table

na(n)
12
21
31
41
55
61
7103
813
9249
1019
11329891
1232
1336846277
141379
1559793
16126689
171230752346353
184727
19336967037143579
20436486
212252263619
2256815333
2348869596859895986087
241549256
251654529071288638505
2623390099351
2756463097772562963
2851860555558
2910513391193507374500051862069

[2,1,1,1,5,1,103,13,249,19,329891,32,36846277,
 1379,59793,126689,1230752346353,4727,
 336967037143579,436486,2252263619,56815333,
 48869596859895986087,1549256,1654529071288638505,
 23390099351,56463097772562963,51860555558,
 10513391193507374500051862069]