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A247079 as a simple table

na(n)
1345
21050
31645
44386
56489
68041
713026
823881
988473
10115957
11255041
12342637
13377201
141497517
152132021
162428489
173256261
183847001
194114285
204646101
215054221
226816865
237218641
247587901
2513384681
2614872837
2717897737
2820901553
2923807821
3025863653
3128207957

[345,1050,1645,4386,6489,8041,13026,23881,88473,
 115957,255041,342637,377201,1497517,2132021,
 2428489,3256261,3847001,4114285,4646101,5054221,
 6816865,7218641,7587901,13384681,14872837,
 17897737,20901553,23807821,25863653,28207957]