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A034428 as a simple table

n a(n)
0 0
1 0
2 1
3 1
4 3
5 9
6 35
7 155
8 791
9 4529
10 28839
11 201939
12 1542739
13 12767689
14 113794603
15 1086657403
16 11068604847
17 119790363489
18 1372696498127
19 16603828720547
20 211406514019115
21 2826296899863929
22 39584082775592211
23 579600224535319371

[0,0,1,1,3,9,35,155,791,4529,28839,201939,1542739,
 12767689,113794603,1086657403,11068604847,
 119790363489,1372696498127,16603828720547,
 211406514019115,2826296899863929,
 39584082775592211,579600224535319371]

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)