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A263667 as a simple table

n a(n)
1 3
2 12
3 57
4 283
5 1415
6 7097
7 35513
8 177572
9 887845
10 4438957
11 22194651
12 110973054
13 554865069
14 2774325211
15 13871626055
16 69358131749
17 346790660621
18 1733953303574
19 8669766516865
20 43348832566369
21 216744162822867
22 1083720814100868 

[3,12,57,283,1415,7097,35513,177572,887845,
 4438957,22194651,110973054,554865069,2774325211,
 13871626055,69358131749,346790660621,
 1733953303574,8669766516865,43348832566369,
 216744162822867,1083720814100868]

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Last modified April 25 05:49 EDT 2024. Contains 371964 sequences. (Running on oeis4.)