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A317734 as a simple table

na(n)
10
21
31
44
514
622
7274
8676
93242
1011126
1182244
12533332
133119164
1425366420
15294184154
162840519658
1733041657228
18516226778736
198641833554020

[0,1,1,4,14,22,274,676,3242,11126,82244,533332,
 3119164,25366420,294184154,2840519658,33041657228,
 516226778736,8641833554020]