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A159278 as a simple table

n a(n)
0 1
1 -21
2 601
3 -840
4 177359
5 -33320
6 7013161
7 -1344280
8 410409119
9 -7196616
10 -10002319145
11 -11822161400
12 2097449375045789
13 5056203186008
14 -2549150819228993
15 -3278437958909400
16 159466069507007653663
17 2732389126406520952
18 -234015558779934114159293

[1,-21,601,-840,177359,-33320,7013161,-1344280,
 410409119,-7196616,-10002319145,-11822161400,
 2097449375045789,5056203186008,-2549150819228993,
 -3278437958909400,159466069507007653663,
 2732389126406520952,-234015558779934114159293]

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Last modified May 21 04:46 EDT 2022. Contains 353887 sequences. (Running on oeis4.)