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A058262 as a simple table

na(n)
01
11
22
34
48
596
6384
72304
84608
918432
10552960
1119906560
12796262400
1333443020800
1466886041600
15267544166400
16535088332800
1732105299968000
182118949797888000
19148326485852160000
2010679506981355520000

[1,1,2,4,8,96,384,2304,4608,18432,552960,19906560,
 796262400,33443020800,66886041600,267544166400,
 535088332800,32105299968000,2118949797888000,
 148326485852160000,10679506981355520000]