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A297926 as a simple table

na(n)
01
11
26
350
4525
56552
693786
71504932
826640900
9514083570
1010713538550
11239342496120
125697111804566
13143759365731100
143829115870472600
15107260549881604200
163149703964487098665
1796686987797052290440
183094969650442399156350
19103079905957566679518300

[1,1,6,50,525,6552,93786,1504932,26640900,
 514083570,10713538550,239342496120,5697111804566,
 143759365731100,3829115870472600,
 107260549881604200,3149703964487098665,
 96686987797052290440,3094969650442399156350,
 103079905957566679518300]