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A146897 as a simple table

n a(n)
0 1
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
10 260442
11 5804136
12 74455407
13 746650008
14 6776021115
15 48988609776
16 296249593887
17 1505946930696
18 6456853758147
19 23472658198080
20 72678166237737
21 192293022909528
22 436002802265628
23 849260837522448

[1,0,0,0,0,0,0,0,0,0,260442,5804136,74455407,
 746650008,6776021115,48988609776,296249593887,
 1505946930696,6456853758147,23472658198080,
 72678166237737,192293022909528,436002802265628,
 849260837522448]

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Last modified April 19 04:35 EDT 2024. Contains 371782 sequences. (Running on oeis4.)