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A305239 as a simple table

na(n)
11
24
318
494
51134
612521
7311014
812726939
9841464188
1099227326734
1119635419823116
126617813957084794
133801727775370243509

[1,4,18,94,1134,12521,311014,12726939,841464188,
 99227326734,19635419823116,6617813957084794,
 3801727775370243509]