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A027333 as a simple table

n a(n)
0 1
1 3
2 18
3 65
4 230
5 783
6 2612
7 8573
8 27810
9 89386
10 285214
11 904671
12 2855438
13 8975432
14 28112778
15 87786759
16 273402138
17 849498192
18 2634067338
19 8152533735
20 25190812134
21 77722369419
22 239477564892
23 736972233435

[1,3,18,65,230,783,2612,8573,27810,89386,285214,
 904671,2855438,8975432,28112778,87786759,
 273402138,849498192,2634067338,8152533735,
 25190812134,77722369419,239477564892,736972233435]

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Last modified April 26 09:05 EDT 2024. Contains 371991 sequences. (Running on oeis4.)