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A306868 as a simple table

na(n)
1871585
21388145
31483785
42479065
52580105
64895241
73830625
87336455
99100905
1010350345
1116933105
129843526
1316367481
1424829945
1515706090
1618653745
1727866241
1821080865
1915439545
2023872185
2124401601
2232263905
2353763535
2463075321
2541337555
2660923577
2790245793

[871585,1388145,1483785,2479065,2580105,4895241,
 3830625,7336455,9100905,10350345,16933105,9843526,
 16367481,24829945,15706090,18653745,27866241,
 21080865,15439545,23872185,24401601,32263905,
 53763535,63075321,41337555,60923577,90245793]