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A027088 as a simple table

n a(n)
1 1
2 3
3 6
4 16
5 41
6 107
7 283
8 757
9 2043
10 5557
11 15216
12 41906
13 115999
14 322537
15 900406
16 2522616
17 7090307
18 19987069
19 56492426
20 160062636
21 454529595
22 1293394325
23 3687475479
24 10531663241
25 30128741717
26 86324342567
27 247691217352

[1,3,6,16,41,107,283,757,2043,5557,15216,41906,
 115999,322537,900406,2522616,7090307,19987069,
 56492426,160062636,454529595,1293394325,
 3687475479,10531663241,30128741717,86324342567,
 247691217352]

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)