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A275310 as a simple table

n a(n)
0 1
1 1
2 2
3 4
4 11
5 30
6 102
7 346
8 1353
9 5444
10 24170
11 110082
12 546075
13 2777828
14 15099359
15 84491723
16 499665713
17 3035284304
18 19375261490
19 126821116410
20 866293979945
21 6072753348997
22 44193947169228
23 329387416656794
24 2542173092336648
25 20069525888319293

[1,1,2,4,11,30,102,346,1353,5444,24170,110082,
 546075,2777828,15099359,84491723,499665713,
 3035284304,19375261490,126821116410,866293979945,
 6072753348997,44193947169228,329387416656794,
 2542173092336648,20069525888319293]

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Last modified July 26 13:34 EDT 2021. Contains 346294 sequences. (Running on oeis4.)