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A248822 as a simple table

na(n)
11
21
31
42
53
68
710
836
964
10200
11432
12630
131088
144800
157590
1632448
1747040
18114240
19164160
20835920
211302840
224804800
237091712
2425243920
2539168000
26171555840
27320973840
28667447200
291113944832
303338108928
315181926400
3219372953600
3331804416000
34132562944000

[1,1,1,2,3,8,10,36,64,200,432,630,1088,4800,7590,
 32448,47040,114240,164160,835920,1302840,4804800,
 7091712,25243920,39168000,171555840,320973840,
 667447200,1113944832,3338108928,5181926400,
 19372953600,31804416000,132562944000]