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A115331 as a simple table

n a(n)
0 1
1 1
2 6
3 16
4 106
5 426
6 3076
7 15856
8 123516
9 757756
10 6315976
11 44203776
12 391582456
13 3043809016
14 28496668656
15 241563299776
16 2378813448976
17 21703877431056
18 223903020594016
19 2177251989389056
20 23448038945820576
21 241173237884726176

[1,1,6,16,106,426,3076,15856,123516,757756,
 6315976,44203776,391582456,3043809016,28496668656,
 241563299776,2378813448976,21703877431056,
 223903020594016,2177251989389056,
 23448038945820576,241173237884726176]

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Last modified March 28 05:01 EDT 2024. Contains 371235 sequences. (Running on oeis4.)