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A197463 as a simple table

na(n)
12
23
36
413
528
666
7148
8349
9828
102005
114880
1212043
1329852
1474645
15187498
16473448
171199630
183050554
197778234
2019885465
2150950796
22130824763
23336555890
24867389312
252239220294
265789804688

[2,3,6,13,28,66,148,349,828,2005,4880,12043,29852,
 74645,187498,473448,1199630,3050554,7778234,
 19885465,50950796,130824763,336555890,867389312,
 2239220294,5789804688]