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A266855 as a simple table

na(n)
12
26
344
4438
54156
649033
7588632
88351513
9113609298
101770032098
1126096782411
12426735882363
136595598937191
14110427559297288
151759795259815468
1629843750451187538
17485812231474336419
188302508424244712407

[2,6,44,438,4156,49033,588632,8351513,113609298,
 1770032098,26096782411,426735882363,6595598937191,
 110427559297288,1759795259815468,
 29843750451187538,485812231474336419,
 8302508424244712407]