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A090902 as a simple table

n a(n)
1 1
2 1
3 2
4 5
5 17
6 64
7 268
8 1236
9 6286
10 35031
11 212401
12 1392489
13 9817398
14 74078419
15 595722994
16 5086611025
17 45961503660
18 438168680119
19 4395396953168
20 46281082011630
21 510378647082537
22 5882795810558767
23 70740717281280862
24 885944239324190839
25 11537420341016416104

[1,1,2,5,17,64,268,1236,6286,35031,212401,1392489,
 9817398,74078419,595722994,5086611025,45961503660,
 438168680119,4395396953168,46281082011630,
 510378647082537,5882795810558767,
 70740717281280862,885944239324190839,
 11537420341016416104]

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Last modified November 13 01:54 EST 2019. Contains 329085 sequences. (Running on oeis4.)