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A128650 as a simple table

n a(n)
2 0
3 4
4 16
5 60
6 224
7 840
8 3168
9 12012
10 45760
11 175032
12 671840
13 2586584
14 9984576
15 38630800
16 149768640
17 581690700
18 2262890880
19 8815845720
20 34389986400
21 134312002440
22 525129633600
23 2055166429680
24 8050465600320
25 31561484455800

[0,4,16,60,224,840,3168,12012,45760,175032,671840,
 2586584,9984576,38630800,149768640,581690700,
 2262890880,8815845720,34389986400,134312002440,
 525129633600,2055166429680,8050465600320,
 31561484455800]

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)