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A001571 as a simple table

n a(n)
0 0
1 2
2 9
3 35
4 132
5 494
6 1845
7 6887
8 25704
9 95930
10 358017
11 1336139
12 4986540
13 18610022
14 69453549
15 259204175
16 967363152
17 3610248434
18 13473630585
19 50284273907
20 187663465044
21 700369586270
22 2613814880037
23 9754889933879
24 36405744855480
25 135868089488042

[0,2,9,35,132,494,1845,6887,25704,95930,358017,
 1336139,4986540,18610022,69453549,259204175,
 967363152,3610248434,13473630585,50284273907,
 187663465044,700369586270,2613814880037,
 9754889933879,36405744855480,135868089488042]

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Last modified April 18 17:56 EDT 2024. Contains 371781 sequences. (Running on oeis4.)