A301878 - OEIS

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A301878 as a simple table

n	a(n)
1	1
2	5
3	29
4	203
5	1961
6	46079
7	1454613
8	62334085
9	3652793090
10	396573816796
11	69941377742308
12	18134969889221510
13	6588551772384992388
14	3921248690493143791628
15	3850994691538742533588713

[1,5,29,203,1961,46079,1454613,62334085, 3652793090,396573816796,69941377742308, 18134969889221510,6588551772384992388, 3921248690493143791628,3850994691538742533588713]