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A239862 as a simple table

na(n)
18
25
3130
4484
54549
619065
777212
8970717
94024283
1029283865
11237306256
12903816798
136001392838
1442830861947
15200921301635
161351900199288
178836338066911
1844530526981817
19287975221682482
201867118985367733

[8,5,130,484,4549,19065,77212,970717,4024283,
 29283865,237306256,903816798,6001392838,
 42830861947,200921301635,1351900199288,
 8836338066911,44530526981817,287975221682482,
 1867118985367733]