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A200744 as a simple table

n a(n)
1 1
2 2
3 3
4 6
5 12
6 30
7 72
8 210
9 630
10 1920
11 6336
12 22176
13 79200
14 295680
15 1146600
16 4586400
17 18869760
18 80061696
19 348986880
20 1560176640
21 7148445696
22 33530112000
23 160825785120
24 787718131200
25 3938590656000
26 20083261440000
27 104351247000000
28 552173794099200
29 2973528918360000
30 16286983961149440

[1,2,3,6,12,30,72,210,630,1920,6336,22176,79200,
 295680,1146600,4586400,18869760,80061696,
 348986880,1560176640,7148445696,33530112000,
 160825785120,787718131200,3938590656000,
 20083261440000,104351247000000,552173794099200,
 2973528918360000,16286983961149440]

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Last modified March 29 05:43 EDT 2024. Contains 371264 sequences. (Running on oeis4.)