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A288808 as a simple table

na(n)
01
12
22
312
44
524
640
7240
816
996
10160
11960
121088
136528
1410880
1565280
16256
171536
182560
1915360
2017408
21104448
22174080
231044480
241052672
256316032
2610526720
2763160320
2871581696
29429490176
30715816960
314294901760
3265536
33393216
34655360
353932160
364456448

[1,2,2,12,4,24,40,240,16,96,160,960,1088,6528,
 10880,65280,256,1536,2560,15360,17408,104448,
 174080,1044480,1052672,6316032,10526720,63160320,
 71581696,429490176,715816960,4294901760,65536,
 393216,655360,3932160,4456448]