A306206 - OEIS

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A306206 as a simple table

n	a(n)
0	1
1	2
2	13
3	3445
4	127028721
5	1249195963773451
6	5343245431687763366112193
7	14729376926426500067331714992293420777
8	36332859343341728199556523379140726537646663631786369

[1,2,13,3445,127028721,1249195963773451, 5343245431687763366112193, 14729376926426500067331714992293420777, 36332859343341728199556523379140726537646663631786\ 369]