A299306 - OEIS

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A299306 as a simple table

n	a(n)
1	8
2	2048
3	13075
4	144040
5	3860858
6	76611604
7	1227812226
8	23819382545
9	471369052777
10	8749447076371
11	164571560365968
12	3152188315142786
13	59832211663862100
14	1132092731063667371
15	21504285978321722965

[8,2048,13075,144040,3860858,76611604,1227812226, 23819382545,471369052777,8749447076371, 164571560365968,3152188315142786, 59832211663862100,1132092731063667371, 21504285978321722965]