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A149306 formatted as a simple table:

n a(n)
0 1
1 1
2 4
3 11
4 48
5 157
6 711
7 2559
8 11846
9 45183
10 212143
11 840277
12 3984616
13 16205687
14 77410374
15 321065635
16 1542228908
17 6494244945
18 31332380867
19 133546094665
20 646603376846
21 2783426236771
22 13516256002852
23 58666741189805
24 285582656349044
25 1248296193322585
26 6089197321956135
27 26777517944746803

[1,1,4,11,48,157,711,2559,11846,45183,212143,
 840277,3984616,16205687,77410374,321065635,
 1542228908,6494244945,31332380867,133546094665,
 646603376846,2783426236771,13516256002852,
 58666741189805,285582656349044,1248296193322585,
 6089197321956135,26777517944746803]

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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