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A326744 as a simple table

na(n)
01
16
242
3198
41068
55196
625902
7125874
8609780
92933562
1014058132
1167139772
12319822572
131520161374
147211880744
1534157352042
16161541458514
17763007236542
183599867690610

[1,6,42,198,1068,5196,25902,125874,609780,2933562,
 14058132,67139772,319822572,1520161374,7211880744,
 34157352042,161541458514,763007236542,
 3599867690610]