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A234505 as a simple table

n a(n)
0 1
1 2
2 19
3 252
4 3885
5 65274
6 1159587
7 21421248
8 407337153
9 7920326700
10 156753610013
11 3147328992080
12 63951322669065
13 1312575792628356
14 27172514322677625
15 566707337222428800
16 11896007334177739113
17 251142622845893276190
18 5328891499524964282170

[1,2,19,252,3885,65274,1159587,21421248,407337153,
 7920326700,156753610013,3147328992080,
 63951322669065,1312575792628356,27172514322677625,
 566707337222428800,11896007334177739113,
 251142622845893276190,5328891499524964282170]

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)