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A055814 as a simple table

n a(n)
0 1
1 0
2 1
3 2
4 3
5 20
6 55
7 210
8 1225
9 4760
10 26145
11 157850
12 811195
13 5345340
14 35170135
15 222472250
16 1650073425
17 12000388400
18 88563700225
19 720929459250
20 5786843137075
21 48072795270500
22 424314078763575
23 3731123025279650
24 34084058218435225
25 323768324084205000

[1,0,1,2,3,20,55,210,1225,4760,26145,157850,
 811195,5345340,35170135,222472250,1650073425,
 12000388400,88563700225,720929459250,
 5786843137075,48072795270500,424314078763575,
 3731123025279650,34084058218435225,
 323768324084205000]

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Last modified May 18 21:39 EDT 2024. Contains 372666 sequences. (Running on oeis4.)