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A157312 as a simple table

n a(n)
0 1
1 1
2 1
3 2
4 5
5 18
6 84
7 481
8 3249
9 25359
10 224000
11 2208441
12 24019991
13 285633470
14 3685413373
15 51271476627
16 764944009086
17 12182390286127
18 206262410584138
19 3699483818281188
20 70067511789111404
21 1397379232420943285

[1,1,1,2,5,18,84,481,3249,25359,224000,2208441,
 24019991,285633470,3685413373,51271476627,
 764944009086,12182390286127,206262410584138,
 3699483818281188,70067511789111404,
 1397379232420943285]

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Last modified May 5 10:46 EDT 2024. Contains 372275 sequences. (Running on oeis4.)