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A291888 as a simple table

n a(n)
4 1
5 4
6 19
7 69
8 252
9 855
10 2867
11 9339
12 30085
13 95524
14 300796
15 939228
16 2915481
17 9001380
18 27675779
19 84782673
20 258956584
21 788926699
22 2398385803
23 7277878707
24 22050326805
25 66718218120
26 201640080056
27 608808949752
28 1836608777233
29 5536482441124
30 16679237438035

[1,4,19,69,252,855,2867,9339,30085,95524,300796,
 939228,2915481,9001380,27675779,84782673,
 258956584,788926699,2398385803,7277878707,
 22050326805,66718218120,201640080056,608808949752,
 1836608777233,5536482441124,16679237438035]

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Last modified April 14 18:28 EDT 2024. Contains 371667 sequences. (Running on oeis4.)