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A376434 as a simple table

na(n)
12
223
3223
42237
523333
6223337
72233373
822323337
9222335353
102232333533
1122323332323
12222335353337
132223337223773
1422233372237737
15222322375373773
162223223753737733
1722232232373337353
18222237322353237223
192222327532332333737
2022223353533353323333

[2,23,223,2237,23333,223337,2233373,22323337,
 222335353,2232333533,22323332323,222335353337,
 2223337223773,22233372237737,222322375373773,
 2223223753737733,22232232373337353,
 222237322353237223,2222327532332333737,
 22223353533353323333]