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A291014 as a simple table

n a(n)
0 0
1 0
2 2
3 6
4 12
5 23
6 48
7 105
8 228
9 486
10 1026
11 2161
12 4548
13 9555
14 20026
15 41874
16 87384
17 182043
18 378648
19 786429
20 1631120
21 3378750
22 6990510
23 14447045
24 29826156
25 61516455
26 126761190
27 260978922
28 536870916
29 1103567983
30 2266788288
31 4652881233
32 9544371772
33 19565962134

[0,0,2,6,12,23,48,105,228,486,1026,2161,4548,9555,
 20026,41874,87384,182043,378648,786429,1631120,
 3378750,6990510,14447045,29826156,61516455,
 126761190,260978922,536870916,1103567983,
 2266788288,4652881233,9544371772,19565962134]

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Last modified May 6 10:12 EDT 2024. Contains 372293 sequences. (Running on oeis4.)