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A203297 as a simple table

na(n)
18
236
3280
41844
59880
643958
7168314
8568933
91734054
104842044
1112545910
1230469542
1369935848
14152731858
15319150868
16641127127
171243115122
182334434336
194258292458
207564553798
2113115830616
2222239519138
2336942424868
2460209406935

[8,36,280,1844,9880,43958,168314,568933,1734054,
 4842044,12545910,30469542,69935848,152731858,
 319150868,641127127,1243115122,2334434336,
 4258292458,7564553798,13115830616,22239519138,
 36942424868,60209406935]