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A001352 as a simple table

n a(n)
0 1
1 6
2 24
3 90
4 336
5 1254
6 4680
7 17466
8 65184
9 243270
10 907896
11 3388314
12 12645360
13 47193126
14 176127144
15 657315450
16 2453134656
17 9155223174
18 34167758040
19 127515808986
20 475895477904
21 1776066102630
22 6628368932616
23 24737409627834
24 92321269578720
25 344547668687046

[1,6,24,90,336,1254,4680,17466,65184,243270,
 907896,3388314,12645360,47193126,176127144,
 657315450,2453134656,9155223174,34167758040,
 127515808986,475895477904,1776066102630,
 6628368932616,24737409627834,92321269578720,
 344547668687046]

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Last modified May 15 08:34 EDT 2024. Contains 372538 sequences. (Running on oeis4.)