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A022680 as a simple table

n a(n)
0 1
1 -20
2 150
3 -400
4 -875
5 7396
6 -7770
7 -36600
8 56510
9 154660
10 -872
11 -1314200
12 -455605
13 6284960
14 3781830
15 -9954864
16 -43558410
17 -16664680
18 165132890
19 229738040
20 57372644
21 -1326447180
22 -2095012310
23 1723402120
24 7805180205

[1,-20,150,-400,-875,7396,-7770,-36600,56510,
 154660,-872,-1314200,-455605,6284960,3781830,
 -9954864,-43558410,-16664680,165132890,229738040,
 57372644,-1326447180,-2095012310,1723402120,
 7805180205]

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Last modified December 3 23:53 EST 2020. Contains 338920 sequences. (Running on oeis4.)