A197178 - OEIS

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A197178 as a simple table

n	a(n)
1	6
2	144
3	2695
4	50864
5	1096217
6	22335117
7	467923636
8	9715240362
9	202416969329
10	4212994659413
11	87725436272795
12	1826377617714231
13	38026405009459764
14	791717063144087158
15	16483851476415953516
16	343198919447137443062

[6,144,2695,50864,1096217,22335117,467923636, 9715240362,202416969329,4212994659413, 87725436272795,1826377617714231,38026405009459764, 791717063144087158,16483851476415953516, 343198919447137443062]