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A220699 as a simple table

n a(n)
0 0
1 0
2 1
3 2
4 3
5 6
6 13
7 32
8 85
9 246
10 757
11 2480
12 8537
13 30858
14 116229
15 455668
16 1850417
17 7774102
18 33679941
19 150291472
20 689170529
21 3244125554
22 15649195077
23 77287580604
24 390271482145
25 2013310674830
26 10599283282021

[0,0,1,2,3,6,13,32,85,246,757,2480,8537,30858,
 116229,455668,1850417,7774102,33679941,150291472,
 689170529,3244125554,15649195077,77287580604,
 390271482145,2013310674830,10599283282021]

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Last modified April 24 03:08 EDT 2024. Contains 371918 sequences. (Running on oeis4.)