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A263575 as a simple table

n a(n)
0 2
1 1
2 4
3 14
4 53
5 227
6 1092
7 5791
8 33350
9 206511
10 1365563
11 9590847
12 71216713
13 556861216
14 4569168866
15 39222394456
16 351304769679
17 3275433717440
18 31723522878974
19 318571978752719
20 3311400814816987
21 35573458376435132
22 394404160256111139
23 4507130777468928696

[2,1,4,14,53,227,1092,5791,33350,206511,1365563,
 9590847,71216713,556861216,4569168866,39222394456,
 351304769679,3275433717440,31723522878974,
 318571978752719,3311400814816987,
 35573458376435132,394404160256111139,
 4507130777468928696]

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Last modified April 18 21:51 EDT 2024. Contains 371781 sequences. (Running on oeis4.)