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A057973 as a simple table

n a(n)
1 1
2 2
3 5
4 16
5 55
6 225
7 949
8 4269
9 19500
10 91115
11 429742
12 2047660
13 9820197
14 47383255
15 229725560
16 1118568692
17 5466616025
18 26804560282
19 131817042605
20 649952289243 

[1,2,5,16,55,225,949,4269,19500,91115,429742,
 2047660,9820197,47383255,229725560,1118568692,
 5466616025,26804560282,131817042605,649952289243]

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Last modified April 25 09:34 EDT 2024. Contains 371967 sequences. (Running on oeis4.)