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A252455 as a simple table

na(n)
13938
220242
3134907
4863351
55596619
636760486
7240708592
81577703429
910367458379
1068072122171
11446783070387
122933845046205
1319268013875675
14126527744827003
15830860795856980
165456160445875431
1735830272826754996

[3938,20242,134907,863351,5596619,36760486,
 240708592,1577703429,10367458379,68072122171,
 446783070387,2933845046205,19268013875675,
 126527744827003,830860795856980,5456160445875431,
 35830272826754996]