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A004146 as a simple table

n a(n)
0 0
1 1
2 5
3 16
4 45
5 121
6 320
7 841
8 2205
9 5776
10 15125
11 39601
12 103680
13 271441
14 710645
15 1860496
16 4870845
17 12752041
18 33385280
19 87403801
20 228826125
21 599074576
22 1568397605
23 4106118241
24 10749957120
25 28143753121
26 73681302245

[0,1,5,16,45,121,320,841,2205,5776,15125,39601,
 103680,271441,710645,1860496,4870845,12752041,
 33385280,87403801,228826125,599074576,1568397605,
 4106118241,10749957120,28143753121,73681302245]

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Last modified March 19 03:33 EDT 2024. Contains 370952 sequences. (Running on oeis4.)