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A183264 as a simple table

n a(n)
1 0
2 2
3 15
4 64
5 220
6 672
7 1904
8 5120
9 13248
10 33280
11 81664
12 196608
13 465920
14 1089536
15 2519040
16 5767168
17 13090816
18 29491200
19 65994752
20 146800640
21 324796416
22 715128832
23 1567621120
24 3422552064
25 7444889600
26 16139681792
27 34879832064
28 75161927680
29 161531035648
30 346281738240

[0,2,15,64,220,672,1904,5120,13248,33280,81664,
 196608,465920,1089536,2519040,5767168,13090816,
 29491200,65994752,146800640,324796416,715128832,
 1567621120,3422552064,7444889600,16139681792,
 34879832064,75161927680,161531035648,346281738240]

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Last modified May 15 12:24 EDT 2024. Contains 372540 sequences. (Running on oeis4.)