A027392 - OEIS

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A027392 as a simple table

n	a(n)
0	1
1	5
2	35
3	295
4	2855
5	30899
6	367345
7	4736765
8	65621105
9	969466645
10	15182851451
11	250823689055
12	4352985062935
13	79083190500995
14	1499493878690105
15	29595296385870949
16	606610493947464545
17	12885821188298643365

[1,5,35,295,2855,30899,367345,4736765,65621105, 969466645,15182851451,250823689055,4352985062935, 79083190500995,1499493878690105,29595296385870949, 606610493947464545,12885821188298643365]