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A074517 formatted as a simple table:

n a(n)
0 3
1 13
2 75
3 469
4 3027
5 19933
6 133275
7 901669
8 6155427
9 42306733
10 292240875
11 2026154869
12 14085427827
13 98109713533
14 684326588475
15 4778079088069
16 33385518460227
17 233393453440333
18 1632228295176075
19 11417968671701269

[3,13,75,469,3027,19933,133275,901669,6155427,
 42306733,292240875,2026154869,14085427827,
 98109713533,684326588475,4778079088069,
 33385518460227,233393453440333,1632228295176075,
 11417968671701269]

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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.


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