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A006451 as a simple table

n a(n)
0 0
1 2
2 5
3 15
4 32
5 90
6 189
7 527
8 1104
9 3074
10 6437
11 17919
12 37520
13 104442
14 218685
15 608735
16 1274592
17 3547970
18 7428869
19 20679087
20 43298624
21 120526554
22 252362877
23 702480239
24 1470878640
25 4094354882
26 8572908965
27 23863649055
28 49966575152

[0,2,5,15,32,90,189,527,1104,3074,6437,17919,
 37520,104442,218685,608735,1274592,3547970,
 7428869,20679087,43298624,120526554,252362877,
 702480239,1470878640,4094354882,8572908965,
 23863649055,49966575152]

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