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A056856 as a simple table

na(n)
11
21
32
42
59
69
76
844
996
1064
1124
12250
13875
141250
15625
16120
171644
188100
1918360
2019440
217776
22720
2312348
2479576
25252105
26420175
27352947
28117649
295040
30104544
31840448
323465728
338028160
3410551296
357340032
362097152

[1,1,2,2,9,9,6,44,96,64,24,250,875,1250,625,120,
 1644,8100,18360,19440,7776,720,12348,79576,252105,
 420175,352947,117649,5040,104544,840448,3465728,
 8028160,10551296,7340032,2097152]