A218467 - OEIS

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A218467 as a simple table

n	a(n)
1	2
2	3
3	7
4	43
5	139
6	50207
7	23
8	10651
9	563
10	11
11	19
12	363303615453958067659
13	787
14	2803
15	3261639461817858097484047657974700766171
16	448513341328399688966874038187266281752082128599801650127
17	89724193529143

[2,3,7,43,139,50207,23,10651,563,11,19, 363303615453958067659,787,2803, 3261639461817858097484047657974700766171, 44851334132839968896687403818726628175208212859980\ 1650127,89724193529143]