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A137545 as a simple table

n a(n)
0 1
1 1
2 2
3 6
4 23
5 104
6 535
7 3081
8 19737
9 140454
10 1111136
11 9777465
12 95587370
13 1034517225
14 12324487009
15 160503772329

[1,1,2,6,23,104,535,3081,19737,140454,1111136,
 9777465,95587370,1034517225,12324487009,
 160503772329]

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)