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A267671 as a simple table

na(n)
120
2800
36654
498438
5528980
65663798
725652956
8245171384
91013801118
109371493930
1136493683322
12338859534762
131258923096090
1411981816150524
1542692770908886
16421365884931922
171442510986422868
1814867064750007770

[20,800,6654,98438,528980,5663798,25652956,
 245171384,1013801118,9371493930,36493683322,
 338859534762,1258923096090,11981816150524,
 42692770908886,421365884931922,1442510986422868,
 14867064750007770]