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A018131 as a simple table

n a(n)
0 1
1 2
2 3
3 3
4 5
5 6
6 9
7 13
8 18
9 26
10 36
11 52
12 74
13 106
14 151
15 216
16 310
17 443
18 633
19 906
20 1296
21 1855
22 2654
23 3798
24 5435
25 7776
26 11128
27 15923
28 22785
29 32605
30 46656
31 66764
32 95537
33 136710
34 195627
35 279936
36 400580
37 573218
38 820257

[1,2,3,3,5,6,9,13,18,26,36,52,74,106,151,216,310,
 443,633,906,1296,1855,2654,3798,5435,7776,11128,
 15923,22785,32605,46656,66764,95537,136710,195627,
 279936,400580,573218,820257]

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Last modified April 25 10:01 EDT 2024. Contains 371967 sequences. (Running on oeis4.)