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A006553 formatted as a simple table:

n a(n)
1 1
2 2
3 6
4 10
5 18
6 40
7 46
8 86
9 118
10 170
11 1172
12 1698
13 1810
14 2268
15 4338
16 18362
17 72662
18 88392
19 94110
20 161538
21 168660
22 292340
23 401208 

[1,2,6,10,18,40,46,86,118,170,1172,1698,1810,2268,
 4338,18362,72662,88392,94110,161538,168660,292340,
 401208]

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Last modified December 1 13:27 EST 2009. Contains 167806 sequences.

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