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A153935 as a simple table

n a(n)
0 1
1 2
2 2
3 3
4 8
5 6
6 19
7 86
8 201
9 747
10 4737
11 13222
12 67580
13 644447
14 2591663
15 18812351
16 265019022
17 1467585490
18 15658902928
19 326360337439 

[1,2,2,3,8,6,19,86,201,747,4737,13222,67580,
 644447,2591663,18812351,265019022,1467585490,
 15658902928,326360337439]

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Last modified April 25 05:56 EDT 2024. Contains 371964 sequences. (Running on oeis4.)