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A147122 as a simple table

na(n)
11
21
31
41
51
65
725
883
9469
102129
1111813
1286099
13830451
148876513
15123941743
162095230143

[1,1,1,1,1,5,25,83,469,2129,11813,86099,830451,
 8876513,123941743,2095230143]