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A146651 as a simple table

na(n)
11
21
31
41
51
61
719
827
9575
101125
1111015
1228077
13425211
141200943
1568898133
16240563637
1737717682283
18167346267341
1925928895855769
20138290723957205
2129142735143015429

[1,1,1,1,1,1,19,27,575,1125,11015,28077,425211,
 1200943,68898133,240563637,37717682283,
 167346267341,25928895855769,138290723957205,
 29142735143015429]