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A181560 as a simple table

n a(n)
0 1
1 0
2 0
3 0
4 0
5 -1
6 0
7 -1
8 -2
9 -1
10 -3
11 -5
12 -4
13 -9
14 -13
15 -14
16 -26
17 -36
18 -45
19 -75
20 -103
21 -139
22 -217
23 -300
24 -420
25 -631
26 -881
27 -1254
28 -1843
29 -2596
30 -3720
31 -5401
32 -7658
33 -10998
34 -15864
35 -22594
36 -32459
37 -46664
38 -66649
39 -95718
40 -137383
41 -196557
42 -282155

[1,0,0,0,0,-1,0,-1,-2,-1,-3,-5,-4,-9,-13,-14,-26,
 -36,-45,-75,-103,-139,-217,-300,-420,-631,-881,
 -1254,-1843,-2596,-3720,-5401,-7658,-10998,-15864,
 -22594,-32459,-46664,-66649,-95718,-137383,
 -196557,-282155]

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Last modified October 29 04:54 EDT 2020. Contains 338066 sequences. (Running on oeis4.)