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A142557 as a simple table

na(n)
1239
2557
3769
41087
51193
61511
71723
82677
93313
103631
114373
124691
134903
145009
155857
166599
176917
187129
198719
209461
2110627
2210733
2311369
2412323
2512641
2612853
2712959
2813171
2913807
3013913
3114549
3214867
3316033
3416139
3516987
3617093
3717623
3817729
3918047
4019001

[239,557,769,1087,1193,1511,1723,2677,3313,3631,
 4373,4691,4903,5009,5857,6599,6917,7129,8719,9461,
 10627,10733,11369,12323,12641,12853,12959,13171,
 13807,13913,14549,14867,16033,16139,16987,17093,
 17623,17729,18047,19001]