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A164537 as a simple table

na(n)
05
128
2154
3840
44564
524752
6134120
7726432
83933776
921300160
10115328416
11624425088
123380802880
1318304471808
1499104534144
15536573667840
162905125864704
1715728975567872
1885160042437120
19461074681546752

[5,28,154,840,4564,24752,134120,726432,3933776,
 21300160,115328416,624425088,3380802880,
 18304471808,99104534144,536573667840,
 2905125864704,15728975567872,85160042437120,
 461074681546752]