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Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A307861 as a simple table

na(n)
11
211
3121
41111
512221
6134431
71234321
81478741
91600951
1017610461
11161696051
12193715071
131634570971

[1,11,121,1111,12221,134431,1234321,1478741,
 1600951,17610461,161696051,193715071,1634570971]