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A149213 as a simple table

n a(n)
0 1
1 1
2 4
3 10
4 42
5 133
6 583
7 2107
8 9498
9 37100
10 170422
11 700327
12 3260691
13 13885192
14 65303709
15 285469307
16 1353084601
17 6034100741
18 28777781725
19 130354698204
20 624801809350
21 2865740094979
22 13792513955173
23 63908250241073
24 308648304990584
25 1442220043930524
26 6985728178113346
27 32873047087774126

[1,1,4,10,42,133,583,2107,9498,37100,170422,
 700327,3260691,13885192,65303709,285469307,
 1353084601,6034100741,28777781725,130354698204,
 624801809350,2865740094979,13792513955173,
 63908250241073,308648304990584,1442220043930524,
 6985728178113346,32873047087774126]

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Last modified September 25 00:48 EDT 2020. Contains 337333 sequences. (Running on oeis4.)