A009467 - OEIS

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A009467 as a simple table

n	a(n)
0	0
1	1
2	-3
3	7
4	-6
5	-125
6	1745
7	-17873
8	166908
9	-1485319
10	12508457
11	-93553781
12	466864222
13	2900675947
14	-158026529323
15	3854302742747
16	-79552171943368
17	1548695456005553
18	-29548490392005579
19	562097583466634703

[0,1,-3,7,-6,-125,1745,-17873,166908,-1485319, 12508457,-93553781,466864222,2900675947, -158026529323,3854302742747,-79552171943368, 1548695456005553,-29548490392005579, 562097583466634703]