A064342 - OEIS

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A064342 as a simple table

n	a(n)
0	1
1	1
2	8
3	176
4	5888
5	238848
6	10770432
7	518909952
8	26156466176
9	1362414338048
10	72751723839488
11	3961437637574656
12	219123329636761600
13	12278352550322765824
14	695492547259800748032
15	39759203500044029263872

[1,1,8,176,5888,238848,10770432,518909952, 26156466176,1362414338048,72751723839488, 3961437637574656,219123329636761600, 12278352550322765824,695492547259800748032, 39759203500044029263872]

[1,1,8,176,5888,238848,10770432,518909952,
 26156466176,1362414338048,72751723839488,
 3961437637574656,219123329636761600,
 12278352550322765824,695492547259800748032,
 39759203500044029263872]