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A269465 as a simple table

na(n)
17
249
3336
42310
515834
6108402
7741090
85060706
934523202
10235304034
111602555906
1210906971810
1374188793154
14504367206882
153427339028610
1623280526483746
17158079249910722
181073053862250594
197281968079533826
2049404973360789410

[7,49,336,2310,15834,108402,741090,5060706,
 34523202,235304034,1602555906,10906971810,
 74188793154,504367206882,3427339028610,
 23280526483746,158079249910722,1073053862250594,
 7281968079533826,49404973360789410]