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A268879 as a simple table

na(n)
12
231
3283
42357
51069
68017
716703
87963
988177
1039461
11129127
12101221
13452873
14153763
15525043
16473027
17283303
181714963
19949307
20736279
211232089
227865171
231138273
2420167369
2514402813
2612501067
271098847
283240983

[2,31,283,2357,1069,8017,16703,7963,88177,39461,
 129127,101221,452873,153763,525043,473027,283303,
 1714963,949307,736279,1232089,7865171,1138273,
 20167369,14402813,12501067,1098847,3240983]