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A271931 as a simple table

n a(n)
1 1
2 1
3 3
4 11
5 44
6 185
7 803
8 3564
9 16082
10 73502
11 339391
12 1580318
13 7410356
14 34956846
15 165756814
16 789543189
17 3775883483
18 18122280953
19 87257629998
20 421366007784
21 2040186607333
22 9902368905093
23 48170863713973
24 234819266573684
25 1146894750998644
26 5611743950271715
27 27504683191546135

[1,1,3,11,44,185,803,3564,16082,73502,339391,
 1580318,7410356,34956846,165756814,789543189,
 3775883483,18122280953,87257629998,421366007784,
 2040186607333,9902368905093,48170863713973,
 234819266573684,1146894750998644,5611743950271715,
 27504683191546135]

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Last modified September 16 19:50 EDT 2024. Contains 375977 sequences. (Running on oeis4.)