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A018000 as a simple table

n a(n)
0 1
1 2
2 4
3 9
4 18
5 38
6 81
7 168
8 350
9 729
10 1516
11 3154
12 6561
13 13647
14 28387
15 59049
16 122826
17 255490
18 531441
19 1105441
20 2299411
21 4782969
22 9948976
23 20694704
24 43046721
25 89540787
26 186252344
27 387420489
28 805867091
29 1676271101
30 3486784401
31 7252803826
32 15086439912

[1,2,4,9,18,38,81,168,350,729,1516,3154,6561,
 13647,28387,59049,122826,255490,531441,1105441,
 2299411,4782969,9948976,20694704,43046721,
 89540787,186252344,387420489,805867091,1676271101,
 3486784401,7252803826,15086439912]

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Last modified April 23 18:16 EDT 2024. Contains 371916 sequences. (Running on oeis4.)