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A021214 as a simple table

na(n)
01
121
2313
34137
451961
5637497
67733881
793310329
81122747001
913491103353
10162002078329
111944677972601
1223340053875321
13280104155744889
143361390924417657
1540337537425951353
16484055527109184121

[1,21,313,4137,51961,637497,7733881,93310329,
 1122747001,13491103353,162002078329,1944677972601,
 23340053875321,280104155744889,3361390924417657,
 40337537425951353,484055527109184121]