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A245859 as a simple table

n a(n)
6 1
7 0
8 0
9 0
10 0
11 0
12 924
13 3432
14 6006
15 10010
16 16016
17 24752
18 17190264
19 139729800
20 748339320
21 2910015528
22 9794896188
23 30251595066
24 2396910064472
25 33228482071400
26 291616291666700
27 2036218597884900
28 11895959650285620
29 61536913327513260
30 1662981928016982300

[1,0,0,0,0,0,924,3432,6006,10010,16016,24752,
 17190264,139729800,748339320,2910015528,
 9794896188,30251595066,2396910064472,
 33228482071400,291616291666700,2036218597884900,
 11895959650285620,61536913327513260,
 1662981928016982300]

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Last modified May 11 03:52 EDT 2024. Contains 372388 sequences. (Running on oeis4.)