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A194720 as a simple table

n a(n)
0 0
1 1
2 6435
3 381333
4 5068915
5 33563481
6 148733571
7 507709165
8 1443039123
9 3581326065
10 8006545891
11 16475259141
12 31690921395
13 57644499913
14 100028603715
15 166732334301
16 268424064211
17 419229350625
18 637511191203
19 946759829365
20 1376599316211
21 1963918036281

[0,1,6435,381333,5068915,33563481,148733571,
 507709165,1443039123,3581326065,8006545891,
 16475259141,31690921395,57644499913,100028603715,
 166732334301,268424064211,419229350625,
 637511191203,946759829365,1376599316211,
 1963918036281]

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Last modified April 24 10:53 EDT 2024. Contains 371936 sequences. (Running on oeis4.)