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A231461 as a simple table

na(n)
178
2363
31709
48426
542229
6229889
71275119
87279729
942382102
10250446008
111497905990
129036224333
1354907497534
14335373838921
152057168224631
1612658862047963
1778093217346161
18482697404161437
192988091782010017

[78,363,1709,8426,42229,229889,1275119,7279729,
 42382102,250446008,1497905990,9036224333,
 54907497534,335373838921,2057168224631,
 12658862047963,78093217346161,482697404161437,
 2988091782010017]