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A250512 as a simple table

na(n)
1120
2889
35996
439187
5248942
61555689
79605300
858826247
9358185874
102172028005
1113132419904
1279233189251
13477317759278
142872297644737
1517270479247100
16103783325757983
17623401528654314
183743476771002397
1922474273340351352

[120,889,5996,39187,248942,1555689,9605300,
 58826247,358185874,2172028005,13132419904,
 79233189251,477317759278,2872297644737,
 17270479247100,103783325757983,623401528654314,
 3743476771002397,22474273340351352]