A297676 - OEIS

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A297676 as a simple table

n	a(n)
1	2
2	11
3	150
4	4633
5	401678
6	78957968
7	41030621948
8	49892385650107
9	157266548152111938
10	1187668466030040777022
11	22731639382952184172610914
12	1058867886808501107531538859306

[2,11,150,4633,401678,78957968,41030621948, 49892385650107,157266548152111938, 1187668466030040777022,22731639382952184172610914, 1058867886808501107531538859306]