A182342 - OEIS

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A182342 as a simple table

n	a(n)
1	5
2	7
3	13
4	29
5	389
6	2053
7	49157
8	106501
9	402653189
10	1744830469
11	2473901162501
12	184717953466373
13	774056185954309
14	31057439705591620336669228531717
15	70745044697537026438728012485623813

[5,7,13,29,389,2053,49157,106501,402653189, 1744830469,2473901162501,184717953466373, 774056185954309,31057439705591620336669228531717, 70745044697537026438728012485623813]