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A152185 as a simple table

n a(n)
0 1
1 -5
2 20
3 -85
4 355
5 -1490
6 6245
7 -26185
8 109780
9 -460265
10 1929695
11 -8090410
12 33919705
13 -142211165
14 596232020
15 -2499751885
16 10480415755
17 -43940006690
18 184222098845
19 -772366329985
20 3238209484180
21 -13576460102465

[1,-5,20,-85,355,-1490,6245,-26185,109780,-460265,
 1929695,-8090410,33919705,-142211165,596232020,
 -2499751885,10480415755,-43940006690,184222098845,
 -772366329985,3238209484180,-13576460102465]

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Last modified June 20 05:50 EDT 2013. Contains 226419 sequences.