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A157805 as a simple table

n a(n)
0 1
1 5
2 6
3 55
4 30
5 125
6 126
7 2015
8 510
9 2075
10 2046
11 15685
12 8190
13 38225
14 32766
15 118975
16 131070
17 3726575
18 524286
19 -217736285
20 2097150
21 4730505125
22 8388606
23 -968249463115
24 33554430
25 14717801331875
26 134217726
27 -2093659805510855
28 536870910
29 86125674710684825

[1,5,6,55,30,125,126,2015,510,2075,2046,15685,
 8190,38225,32766,118975,131070,3726575,524286,
 -217736285,2097150,4730505125,8388606,
 -968249463115,33554430,14717801331875,134217726,
 -2093659805510855,536870910,86125674710684825]

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Last modified July 17 18:47 EDT 2019. Contains 325109 sequences. (Running on oeis4.)