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A081978 as a simple table

n a(n)
1 1
2 3
3 0
4 6
5 0
6 28
7 0
8 66
9 36
10 496
11 0
12 276
13 0
14 8128
15 1631432881
16 120
17 0
18 300
19 0
20 528
21 0
22 38009927549623740385753
23 0
24 630
25 0
26 33550336
27 2172602007770041
28 8256
29 0
30 209628
31 0
32 3570
33 0
34 8589869056
35 0
36 2016
37 0
38 137438691328
39 0
40 3240
41 0
42 662976
43 0
44 2096128
45 41616

[1,3,0,6,0,28,0,66,36,496,0,276,0,8128,1631432881,
 120,0,300,0,528,0,38009927549623740385753,0,630,0,
 33550336,2172602007770041,8256,0,209628,0,3570,0,
 8589869056,0,2016,0,137438691328,0,3240,0,662976,
 0,2096128,41616]

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Last modified July 16 23:11 EDT 2024. Contains 374360 sequences. (Running on oeis4.)