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A227305 as a simple table

na(n)
12
23
35
46
510
619
752
8118
91054
103201
118586
129802
1316120
1460556
15140698
16145216
1711273536
1829886160
1944868748
208748377956
21325377469696
222368739714188

[2,3,5,6,10,19,52,118,1054,3201,8586,9802,16120,
 60556,140698,145216,11273536,29886160,44868748,
 8748377956,325377469696,2368739714188]