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A249051 as a simple table

n a(n)
1 2
2 3
3 7
4 13
5 0
6 61
7 421
8 841
9 0
10 2521
11 0
12 27721
13 0
14 0
15 360361
16 720721
17 0
18 12252241
19 0
20 0
21 0
22 232792561
23 0
24 5354228881
25 0
26 26771144401
27 0
28 80313433201
29 0
30 2329089562801
31 72201776446801
32 0
33 0
34 0
35 0
36 144403552893601
37 0
38 0
39 0
40 5342931457063201
41 0

[2,3,7,13,0,61,421,841,0,2521,0,27721,0,0,360361,
 720721,0,12252241,0,0,0,232792561,0,5354228881,0,
 26771144401,0,80313433201,0,2329089562801,
 72201776446801,0,0,0,0,144403552893601,0,0,0,
 5342931457063201,0]

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Last modified August 14 03:09 EDT 2024. Contains 375146 sequences. (Running on oeis4.)