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A020271 as a simple table

na(n)
1481
21541
31981
42059
52071
66601
78321
816181
921667
1027379
1131361
1237969
1342127
1443553
1545601
1661699
1764201
1888381
1996049
20104441
21110773
22112141
23118301
24120841
25130561
26132727
27146611
28188501
29190171
30191351
31204263
32252601
33270481
34275887

[481,1541,1981,2059,2071,6601,8321,16181,21667,
 27379,31361,37969,42127,43553,45601,61699,64201,
 88381,96049,104441,110773,112141,118301,120841,
 130561,132727,146611,188501,190171,191351,204263,
 252601,270481,275887]