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A268633 as a simple table

n a(n)
1 3
2 24
3 120
4 504
5 1944
6 7128
7 25272
8 87480
9 297432
10 997272
11 3306744
12 10865016
13 35429400
14 114791256
15 369882936
16 1186176312
17 3788111448
18 12053081880
19 38225488248
20 120875192568
21 381221761176
22 1199453833944
23 3765727153080

[3,24,120,504,1944,7128,25272,87480,297432,997272,
 3306744,10865016,35429400,114791256,369882936,
 1186176312,3788111448,12053081880,38225488248,
 120875192568,381221761176,1199453833944,
 3765727153080]

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Last modified April 25 07:07 EDT 2024. Contains 371964 sequences. (Running on oeis4.)