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A291868 as a simple table

na(n)
12
23
39
415
539
645
759
8137
9180
10224
11264
12476
13491
14504
151905
163144
174784
1810893
1924483
2028602
2182706
22100283
23129789
24131886
25132125

[2,3,9,15,39,45,59,137,180,224,264,476,491,504,
 1905,3144,4784,10893,24483,28602,82706,100283,
 129789,131886,132125]