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A206839 as a simple table

na(n)
01
14
216
362
4241
5936
63636
714124
854865
9213124
10827884
113215930
1212492337
1348526704
14188502840
15732242616
162844409393
1711049158596
1842920651992
19166726031798
20647650219393
212515808732184
229772703517132
2337962239661540
24147464991401185
25572830367302660

[1,4,16,62,241,936,3636,14124,54865,213124,827884,
 3215930,12492337,48526704,188502840,732242616,
 2844409393,11049158596,42920651992,166726031798,
 647650219393,2515808732184,9772703517132,
 37962239661540,147464991401185,572830367302660]