A276663 - OEIS

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A276663 as a simple table

n	a(n)
1	5
2	11
3	39
4	139
5	8215
6	131103
7	524323
8	2147483707
9	2305843009213694071
10	618970019642690137449562287
11	162259276829213363391578010288339
12	170141183460469231731687303715884105979

[5,11,39,139,8215,131103,524323,2147483707, 2305843009213694071,618970019642690137449562287, 162259276829213363391578010288339, 170141183460469231731687303715884105979]