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A109469 as a simple table

na(n)
10
22
35
49
549
6259
71736
813408
9117664
101153714
1112492569
12147987413
131903194061
1426402007855
15392928613560
166244069139240
17105515436903720
181889249822655882
1935726927316484053
20711526052649064073

[0,2,5,9,49,259,1736,13408,117664,1153714,
 12492569,147987413,1903194061,26402007855,
 392928613560,6244069139240,105515436903720,
 1889249822655882,35726927316484053,
 711526052649064073]