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A007497 formatted as a simple table:

n a(n)
1 2
2 3
3 4
4 7
5 8
6 15
7 24
8 60
9 168
10 480
11 1512
12 4800
13 15748
14 28672
15 65528
16 122880
17 393192
18 1098240
19 4124736
20 15605760
21 50328576
22 149873152
23 371226240
24 1710858240
25 7926750720
26 33463001088
27 109760857440
28 384120963072

[2,3,4,7,8,15,24,60,168,480,1512,4800,15748,28672,
 65528,122880,393192,1098240,4124736,15605760,
 50328576,149873152,371226240,1710858240,
 7926750720,33463001088,109760857440,384120963072]

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Last modified December 1 19:22 EST 2009. Contains 167811 sequences.


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