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A056388 as a simple table

n a(n)
1 0
2 0
3 0
4 12
5 60
6 792
7 1404
8 10704
9 31200
10 204972
11 349956
12 3727128
13 5065804
14 41572908
15 127198968
16 517279416
17 1041517620
18 11195605728
19 15012935676
20 135825494568
21 363040468328
22 1746669815460
23 3181465294092

[0,0,0,12,60,792,1404,10704,31200,204972,349956,
 3727128,5065804,41572908,127198968,517279416,
 1041517620,11195605728,15012935676,135825494568,
 363040468328,1746669815460,3181465294092]

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Last modified April 25 08:27 EDT 2024. Contains 371964 sequences. (Running on oeis4.)