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A156321 as a simple table

n a(n)
1 0
2 1
3 4
4 9
5 20
6 42
7 85
8 171
9 343
10 687
11 1375
12 2751
13 5504
14 11009
15 22019
16 44039
17 88080
18 176162
19 352325
20 704651
21 1409303
22 2818607
23 5637215
24 11274431
25 22548863
26 45097727
27 90195455
28 180390911
29 360781823
30 721563647
31 1443127295
32 2886254591

[0,1,4,9,20,42,85,171,343,687,1375,2751,5504,
 11009,22019,44039,88080,176162,352325,704651,
 1409303,2818607,5637215,11274431,22548863,
 45097727,90195455,180390911,360781823,721563647,
 1443127295,2886254591]

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Last modified March 29 11:14 EDT 2024. Contains 371278 sequences. (Running on oeis4.)