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A228678 as a simple table

n a(n)
1 5
2 19
3 77
4 313
5 1277
6 5215
7 21305
8 87049
9 355685
10 1453363
11 5938613
12 24265921
13 99153677
14 405154783
15 1655515121
16 6764650225
17 27641241413
18 112945711027
19 461510880221
20 1885793543785
21 7705597945181
22 31486076453887
23 128656207802537

[5,19,77,313,1277,5215,21305,87049,355685,1453363,
 5938613,24265921,99153677,405154783,1655515121,
 6764650225,27641241413,112945711027,461510880221,
 1885793543785,7705597945181,31486076453887,
 128656207802537]

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Last modified November 30 13:12 EST 2021. Contains 349419 sequences. (Running on oeis4.)