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A280155 as a simple table

n a(n)
1 0
2 4
3 8
4 18
5 40
6 92
7 208
8 470
9 1060
10 2384
11 5352
12 11992
13 26824
14 59906
15 133592
16 297510
17 661720
18 1470062
19 3262264
20 7231940
21 16016596
22 35439722
23 78349800
24 173074816
25 382029988
26 842648168
27 1857362384
28 4091321478
29 9006604780
30 19815365450

[0,4,8,18,40,92,208,470,1060,2384,5352,11992,
 26824,59906,133592,297510,661720,1470062,3262264,
 7231940,16016596,35439722,78349800,173074816,
 382029988,842648168,1857362384,4091321478,
 9006604780,19815365450]

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Last modified April 24 16:56 EDT 2024. Contains 371962 sequences. (Running on oeis4.)