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A252406 as a simple table

na(n)
17662
28307
332710
4122653
5551827
62289969
78765249
839649367
9163860739
10627061685
112839245764
1211737621589
1344915317915
14203379617026
15841031366884
163218827526753
1714576234410496
1860290108523804
19230784383770992

[7662,8307,32710,122653,551827,2289969,8765249,
 39649367,163860739,627061685,2839245764,
 11737621589,44915317915,203379617026,841031366884,
 3218827526753,14576234410496,60290108523804,
 230784383770992]