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A055504 as a simple table

n a(n)
0 0
1 0
2 0
3 0
4 0
5 15
6 110
7 455
8 1400
9 3570
10 7980
11 16170
12 30360
13 53625
14 90090
15 145145
16 225680
17 340340
18 499800
19 717060
20 1007760
21 1390515
22 1887270
23 2523675
24 3329480
25 4338950
26 5591300
27 7131150
28 9009000
29 11281725
30 14013090
31 17274285
32 21144480

[0,0,0,0,0,15,110,455,1400,3570,7980,16170,30360,
 53625,90090,145145,225680,340340,499800,717060,
 1007760,1390515,1887270,2523675,3329480,4338950,
 5591300,7131150,9009000,11281725,14013090,
 17274285,21144480]

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)