A252827 - OEIS

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A252827 as a simple table

n	a(n)
1	42
2	729
3	10761
4	125892
5	1165921
6	8807722
7	55960651
8	306796310
9	1481748658
10	6411737114
11	25203579317
12	91037124979
13	305083525901
14	956286103952
15	2823092600299
16	7895877354183
17	21029532417878
18	53571661955209

[42,729,10761,125892,1165921,8807722,55960651, 306796310,1481748658,6411737114,25203579317, 91037124979,305083525901,956286103952, 2823092600299,7895877354183,21029532417878, 53571661955209]