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A269822 as a simple table

n a(n)
1 0
2 5
3 40
4 240
5 1280
6 6400
7 30720
8 143360
9 655360
10 2949120
11 13107200
12 57671680
13 251658240
14 1090519040
15 4697620480
16 20132659200
17 85899345920
18 365072220160
19 1546188226560
20 6528350289920
21 27487790694400
22 115448720916480

[0,5,40,240,1280,6400,30720,143360,655360,2949120,
 13107200,57671680,251658240,1090519040,4697620480,
 20132659200,85899345920,365072220160,
 1546188226560,6528350289920,27487790694400,
 115448720916480]

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Last modified March 28 16:34 EDT 2024. Contains 371254 sequences. (Running on oeis4.)