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A257949 as a simple table

n a(n)
0 0
1 0
2 0
3 12
4 0
5 60
6 36
7 168
8 384
9 396
10 1620
11 1452
12 5388
13 6396
14 14616
15 25860
16 40128
17 87108
18 115992
19 259236
20 358860
21 710220
22 1096392
23 1885080
24 3216768
25 4991700
26 8916024
27 13349448
28 23633064
29 35731944
30 60638400
31 94572072
32 152913120
33 245107764
34 382072212
35 620410980

[0,0,0,12,0,60,36,168,384,396,1620,1452,5388,6396,
 14616,25860,40128,87108,115992,259236,358860,
 710220,1096392,1885080,3216768,4991700,8916024,
 13349448,23633064,35731944,60638400,94572072,
 152913120,245107764,382072212,620410980]

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Last modified July 16 03:21 EDT 2024. Contains 374343 sequences. (Running on oeis4.)