A232962 - OEIS

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A232962 as a simple table

n	a(n)
1	2
2	3974779
3	15681179
4	250818839
5	6682314181
6	9143935289
7	311484445891
8	718930864213
9	1004267651657
10	7014674460791
11	1745134691306711
12	2853623691677477
13	9950715071009107

[2,3974779,15681179,250818839,6682314181, 9143935289,311484445891,718930864213, 1004267651657,7014674460791,1745134691306711, 2853623691677477,9950715071009107]