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A033321 as a simple table

n a(n)
0 1
1 1
2 2
3 6
4 21
5 79
6 311
7 1265
8 5275
9 22431
10 96900
11 424068
12 1876143
13 8377299
14 37704042
15 170870106
16 779058843
17 3571051579
18 16447100702
19 76073821946
20 353224531663
21 1645807790529
22 7692793487307
23 36061795278341
24 169498231169821

[1,1,2,6,21,79,311,1265,5275,22431,96900,424068,
 1876143,8377299,37704042,170870106,779058843,
 3571051579,16447100702,76073821946,353224531663,
 1645807790529,7692793487307,36061795278341,
 169498231169821]

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Last modified May 11 02:40 EDT 2024. Contains 372388 sequences. (Running on oeis4.)