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A228248 as a simple table

n a(n)
0 1
1 0
2 1
3 3
4 9
5 30
6 103
7 357
8 1257
9 4494
10 16246
11 59246
12 217719
13 805389
14 2996113
15 11200113
16 42047593
17 158452138
18 599113966
19 2272065638
20 8639763574
21 32933685102
22 125817012366
23 481631387438
24 1847110931703
25 7095928565405
26 27302745922817
27 105204285608025

[1,0,1,3,9,30,103,357,1257,4494,16246,59246,
 217719,805389,2996113,11200113,42047593,158452138,
 599113966,2272065638,8639763574,32933685102,
 125817012366,481631387438,1847110931703,
 7095928565405,27302745922817,105204285608025]

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Last modified August 14 21:59 EDT 2024. Contains 375167 sequences. (Running on oeis4.)