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A248985 as a simple table

na(n)
12817
24137
36065
48873
512937
618737
730017
847953
976161
10119849
11185817
12315929
13533433
14891593
151468537
162367257
174153753
187216889
1912373897
2020836977
2134213297
2260900465
23107177641
24185861593
25316071033
26523226617
27937146425

[2817,4137,6065,8873,12937,18737,30017,47953,
 76161,119849,185817,315929,533433,891593,1468537,
 2367257,4153753,7216889,12373897,20836977,
 34213297,60900465,107177641,185861593,316071033,
 523226617,937146425]