A079801 - OEIS

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A079801 as a simple table

n	a(n)
1	1
2	3
3	6
4	11
5	33
6	186
7	2958
8	48246
9	19840326
10	2510415286598
11	521698566186280239801
12	4471373101273208723788137885117929798
13	1253543310663256238898448262146285580160101720412514117844237110598

[1,3,6,11,33,186,2958,48246,19840326, 2510415286598,521698566186280239801, 4471373101273208723788137885117929798, 12535433106632562388984482621462855801601017204125\ 14117844237110598]