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A276895 as a simple table

n a(n)
0 1
1 1
2 3
3 13
4 75
5 541
6 4142
7 34792
8 322904
9 3303160
10 37046948
11 451109712
12 5923255272
13 83424945768
14 1254842021634
15 20081656282038
16 340747127912616
17 6111343349250912
18 115529870445001392
19 2296160998268520576
20 47869541875153872144
21 1044601509263870430000

[1,1,3,13,75,541,4142,34792,322904,3303160,
 37046948,451109712,5923255272,83424945768,
 1254842021634,20081656282038,340747127912616,
 6111343349250912,115529870445001392,
 2296160998268520576,47869541875153872144,
 1044601509263870430000]

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Last modified June 6 16:10 EDT 2024. Contains 373133 sequences. (Running on oeis4.)