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A210408 as a simple table

na(n)
1864
280496
37380816
4677993552
562266883792
65718722907600
7525218223843536
848237041019306960
94430181461077005264
10406876281233712454096
1137368290575302443698896
123431974791902387709770704

[864,80496,7380816,677993552,62266883792,
 5718722907600,525218223843536,48237041019306960,
 4430181461077005264,406876281233712454096,
 37368290575302443698896,3431974791902387709770704]