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A034824 formatted as a simple table:

n a(n)
0 1
1 1
2 1
3 2
4 4
5 9
6 20
7 48
8 115
9 285
10 710
11 1789
12 4514
13 11431
14 28922
15 73182
16 184917
17 466755
18 1176393
19 2961205
20 7443770
21 18689435
22 46869152
23 117412440
24 293832126
25 734645046
26 1835147741
27 4580420719
28 11423511895
29 28469058647
30 70899220083

[1,1,1,2,4,9,20,48,115,285,710,1789,4514,11431,
 28922,73182,184917,466755,1176393,2961205,7443770,
 18689435,46869152,117412440,293832126,734645046,
 1835147741,4580420719,11423511895,28469058647,
 70899220083]

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


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