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A006773 as a simple table

n a(n)
1 1
2 5
3 30
4 186
5 1164
6 7344
7 46732
8 299604
9 1932900
10 12537542
11 81705782
12 534663812
13 3511466838
14 23136724382
15 152888000934
16 1012925595468
17 6726766841438
18 44767880394634

[1,5,30,186,1164,7344,46732,299604,1932900,
 12537542,81705782,534663812,3511466838,
 23136724382,152888000934,1012925595468,
 6726766841438,44767880394634]

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Last modified June 19 07:18 EDT 2013. Contains 226399 sequences.