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A149843 as a simple table

n a(n)
0 1
1 2
2 4
3 12
4 36
5 110
6 362
7 1212
8 4082
9 13948
10 48522
11 169384
12 594950
13 2109232
14 7512468
15 26841982
16 96379292
17 347465634
18 1255631188
19 4550488168
20 16539909198
21 60243693028
22 219843780960
23 803942546000
24 2945078921184
25 10804509953450
26 39698224904260
27 146068212217332
28 538105375518608
29 1984652825246278

[1,2,4,12,36,110,362,1212,4082,13948,48522,169384,
 594950,2109232,7512468,26841982,96379292,
 347465634,1255631188,4550488168,16539909198,
 60243693028,219843780960,803942546000,
 2945078921184,10804509953450,39698224904260,
 146068212217332,538105375518608,1984652825246278]

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Last modified September 2 17:16 EDT 2024. Contains 375614 sequences. (Running on oeis4.)