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A230555 as a simple table

n a(n)
0 1
1 1
2 2
3 4
4 10
5 25
6 66
7 173
8 460
9 1218
10 3240
11 8602
12 22878
13 60794
14 161668
15 429752
16 1142758
17 3038173
18 8078606
19 21479469
20 57113888 

[1,1,2,4,10,25,66,173,460,1218,3240,8602,22878,
 60794,161668,429752,1142758,3038173,8078606,
 21479469,57113888]

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Last modified May 9 10:34 EDT 2024. Contains 372350 sequences. (Running on oeis4.)