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A000291 as a simple table

n a(n)
0 2
1 4
2 9
3 16
4 29
5 47
6 77
7 118
8 181
9 267
10 392
11 560
12 797
13 1111
14 1541
15 2106
16 2863
17 3846
18 5142
19 6808
20 8973
21 11733
22 15275
23 19753
24 25443
25 32582
26 41569
27 52770
28 66757
29 84078
30 105555
31 131995
32 164566
33 204450
34 253292
35 312799
36 385285
37 473183
38 579722
39 708353
40 863553

[2,4,9,16,29,47,77,118,181,267,392,560,797,1111,
 1541,2106,2863,3846,5142,6808,8973,11733,15275,
 19753,25443,32582,41569,52770,66757,84078,105555,
 131995,164566,204450,253292,312799,385285,473183,
 579722,708353,863553]

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Last modified April 27 12:04 EDT 2024. Contains 372019 sequences. (Running on oeis4.)