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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”).

A147151 as a simple table

na(n)
11
21
31
41
51
61
71
81
95
1013
1125
1261
13195
14561
151503
166349
1734075
18171101
19895779
205615365
2139425317
22281937999

[1,1,1,1,1,1,1,1,5,13,25,61,195,561,1503,6349,
 34075,171101,895779,5615365,39425317,281937999]