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A211418 as a simple table

na(n)
01
11
22
36
412
560
660
7420
8840
92520
102520
1127720
1213860
13180180
14360360
15360360
16720720
1712252240
184084080
1977597520
2038798760
21116396280
22232792560
235354228880
241338557220
256692786100
2613385572200
2740156716600
2880313433200

[1,1,2,6,12,60,60,420,840,2520,2520,27720,13860,
 180180,360360,360360,720720,12252240,4084080,
 77597520,38798760,116396280,232792560,5354228880,
 1338557220,6692786100,13385572200,40156716600,
 80313433200]