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A279561 as a simple table

n a(n)
0 1
1 1
2 2
3 6
4 21
5 77
6 287
7 1079
8 4082
9 15522
10 59280
11 227240
12 873886
13 3370030
14 13027730
15 50469890
16 195892565
17 761615285
18 2965576715
19 11563073315
20 45141073925
21 176423482325
22 690215089745
23 2702831489825
24 10593202603775
25 41550902139551
26 163099562175851

[1,1,2,6,21,77,287,1079,4082,15522,59280,227240,
 873886,3370030,13027730,50469890,195892565,
 761615285,2965576715,11563073315,45141073925,
 176423482325,690215089745,2702831489825,
 10593202603775,41550902139551,163099562175851]

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)