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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”).

A147182 as a simple table

na(n)
11
21
31
41
51
61
71
81
95
1013
1125
1245
13119
14351
151205
164331
1719073
1879485
19399897
202087281
2112888453
2283190775

[1,1,1,1,1,1,1,1,5,13,25,45,119,351,1205,4331,
 19073,79485,399897,2087281,12888453,83190775]