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A006144 as a simple table

n a(n)
4 0
5 1
6 0
7 0
8 0
9 4
10 5
11 6
12 11
13 31
14 72
15 157
16 312
17 700
18 1472
19 3446
20 7855 

[0,1,0,0,0,4,5,6,11,31,72,157,312,700,1472,3446,
 7855]

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Last modified May 24 18:59 EDT 2024. Contains 372781 sequences. (Running on oeis4.)