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A111298 as a simple table

na(n)
015
16
290
39
4810
59
67290
718
8131220
99
101180980
1127
1231886460
1336
141147912560
1536
1641324852160
1736
181487694677760
1972
20107114016798720
2154
225784156907130880
2372
24416459297313423360
2572
2629985069406566481920
2799
282968521871250081710080

[15,6,90,9,810,9,7290,18,131220,9,1180980,27,
 31886460,36,1147912560,36,41324852160,36,
 1487694677760,72,107114016798720,54,
 5784156907130880,72,416459297313423360,72,
 29985069406566481920,99,2968521871250081710080]