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A054881 as a simple table

n a(n)
0 1
1 0
2 4
3 8
4 48
5 160
6 704
7 2688
8 11008
9 43520
10 175104
11 698368
12 2797568
13 11182080
14 44744704
15 178946048
16 715849728
17 2863267840
18 11453333504
19 45812809728
20 183252287488
21 733007052800
22 2932032405504
23 11728121233408

[1,0,4,8,48,160,704,2688,11008,43520,175104,
 698368,2797568,11182080,44744704,178946048,
 715849728,2863267840,11453333504,45812809728,
 183252287488,733007052800,2932032405504,
 11728121233408]

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Last modified March 28 16:58 EDT 2024. Contains 371254 sequences. (Running on oeis4.)