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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”).

A190757 as a simple table

na(n)
11
21
3101
471
5181
639161
724571
812301
91158551
1087382901
1121211
12373270451
1328143378001
1432414581
151322154751061
169062194370461
171550853481
182819407321151
19265272771839851
202366632711
21137083914639998701
2285417012034751151
233455782010101

[1,1,101,71,181,39161,24571,12301,1158551,
 87382901,21211,373270451,28143378001,32414581,
 1322154751061,9062194370461,1550853481,
 2819407321151,265272771839851,2366632711,
 137083914639998701,85417012034751151,
 3455782010101]