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A319322 as a simple table

na(n)
11
23
311
444
5184
6784
73370
814544
962862
10271804
111175133
125079516
1321951384
1494847528
15409767878
161770177486

[1,3,11,44,184,784,3370,14544,62862,271804,
 1175133,5079516,21951384,94847528,409767878,
 1770177486]