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A197467 as a simple table

n a(n)
1 4
2 6
3 12
4 25
5 56
6 132
7 320
8 792
9 1976
10 4962
11 12576
12 32140
13 82704
14 214044
15 556576
16 1453210
17 3808592
18 10015134
19 26413468
20 69844263 

[4,6,12,25,56,132,320,792,1976,4962,12576,32140,
 82704,214044,556576,1453210,3808592,10015134,
 26413468,69844263]

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Last modified July 14 05:06 EDT 2024. Contains 374291 sequences. (Running on oeis4.)