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A149475 as a simple table

n a(n)
0 1
1 1
2 4
3 13
4 56
5 226
6 992
7 4379
8 19858
9 90896
10 421880
11 1972067
12 9292868
13 44031800
14 209706374
15 1002851646
16 4813287969
17 23172425977
18 111861209159
19 541258139896
20 2624423722255
21 12748621918657
22 62030817232581
23 302268078881713
24 1474874579650713
25 7205109160293116
26 35237202124383216
27 172502683686676076

[1,1,4,13,56,226,992,4379,19858,90896,421880,
 1972067,9292868,44031800,209706374,1002851646,
 4813287969,23172425977,111861209159,541258139896,
 2624423722255,12748621918657,62030817232581,
 302268078881713,1474874579650713,7205109160293116,
 35237202124383216,172502683686676076]

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Last modified June 15 05:55 EDT 2024. Contains 373402 sequences. (Running on oeis4.)