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A108647 as a simple table

n a(n)
0 1
1 20
2 150
3 700
4 2450
5 7056
6 17640
7 39600
8 81675
9 157300
10 286286
11 496860
12 828100
13 1332800
14 2080800
15 3162816
16 4694805
17 6822900
18 9728950
19 13636700
20 18818646
21 25603600
22 34385000
23 45630000
24 59889375
25 77808276
26 100137870
27 127747900

[1,20,150,700,2450,7056,17640,39600,81675,157300,
 286286,496860,828100,1332800,2080800,3162816,
 4694805,6822900,9728950,13636700,18818646,
 25603600,34385000,45630000,59889375,77808276,
 100137870,127747900]

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Last modified March 29 02:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)