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A153666 as a simple table

na(n)
12
24
316
411
516799
611199
75536
892694
961796
1041197
1123242
1255710
13137921
14257825
155271294
16706641581
17471094387
18314062925

[2,4,16,11,16799,11199,5536,92694,61796,41197,
 23242,55710,137921,257825,5271294,706641581,
 471094387,314062925]