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A187274 as a simple table

n a(n)
0 0
1 4
2 20
3 48
4 160
5 320
6 960
7 1792
8 5120
9 9216
10 25600
11 45056
12 122880
13 212992
14 573440
15 983040
16 2621440
17 4456448
18 11796480
19 19922944
20 52428800
21 88080384
22 230686720
23 385875968
24 1006632960
25 1677721600
26 4362076160
27 7247757312
28 18790481920
29 31138512896
30 80530636800
31 133143986176
32 343597383680

[0,4,20,48,160,320,960,1792,5120,9216,25600,45056,
 122880,212992,573440,983040,2621440,4456448,
 11796480,19922944,52428800,88080384,230686720,
 385875968,1006632960,1677721600,4362076160,
 7247757312,18790481920,31138512896,80530636800,
 133143986176,343597383680]

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Last modified June 7 05:22 EDT 2024. Contains 373144 sequences. (Running on oeis4.)