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A071983 as a simple table

n a(n)
15 1
16 1
17 1
18 0
19 0
20 0
21 0
22 0
23 3
24 0
25 10
26 12
27 35
28 52
29 19
30 20
31 349
32 392
33 669
34 4041
35 17175
36 12960
37 14026
38 11889
39 29123
40 39550
41 219968
42 553694
43 2178103
44 5301127
45 12220138
46 38838893
47 68361609
48 140571720
49 280217025
50 204853870
51 738704986
52 2368147377
53 5511090791
54 9802605881

[1,1,1,0,0,0,0,0,3,0,10,12,35,52,19,20,349,392,
 669,4041,17175,12960,14026,11889,29123,39550,
 219968,553694,2178103,5301127,12220138,38838893,
 68361609,140571720,280217025,204853870,738704986,
 2368147377,5511090791,9802605881]

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Last modified April 19 04:04 EDT 2024. Contains 371782 sequences. (Running on oeis4.)