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A001168 as a simple table

na(n)
01
11
22
36
419
563
6216
7760
82725
99910
1036446
11135268
12505861
131903890
147204874
1527394666
16104592937
17400795844
181540820542
195940738676
2022964779660
2188983512783
22345532572678
231344372335524
245239988770268
2520457802016011
2679992676367108
27313224032098244
281228088671826973

[1,1,2,6,19,63,216,760,2725,9910,36446,135268,
 505861,1903890,7204874,27394666,104592937,
 400795844,1540820542,5940738676,22964779660,
 88983512783,345532572678,1344372335524,
 5239988770268,20457802016011,79992676367108,
 313224032098244,1228088671826973]