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A247405 as a simple table

n a(n)
1 0
2 40
3 200
4 760
5 2280
6 5640
7 12120
8 23800
9 43040
10 73840
11 120240
12 188040
13 283680
14 415840
15 593240
16 827680
17 1131240
18 1519200
19 2007240
20 2614720
21 3361280
22 4271080
23 5368320
24 6681840
25 8241120
26 10080760
27 12235400
28 14745640
29 17652360
30 21002520

[0,40,200,760,2280,5640,12120,23800,43040,73840,
 120240,188040,283680,415840,593240,827680,1131240,
 1519200,2007240,2614720,3361280,4271080,5368320,
 6681840,8241120,10080760,12235400,14745640,
 17652360,21002520]

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)