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A026562 as a simple table

na(n)
01
126
2440
36160
477616
5915936
610347520
7113400320
81215923456
912829712896
10133751654400
111381696942080
1214173677776896
13144610035654656
141469203965870080
1514877573810749440
16150264242988711936

[1,26,440,6160,77616,915936,10347520,113400320,
 1215923456,12829712896,133751654400,1381696942080,
 14173677776896,144610035654656,1469203965870080,
 14877573810749440,150264242988711936]