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A087949 formatted as a simple table:

n a(n)
0 1
1 1
2 1
3 2
4 5
5 16
6 59
7 246
8 1131
9 5655
10 30428
11 174835
12 1066334
13 6870542
14 46581883
15 331237074
16 2463361903
17 19112314727
18 154364077009
19 1295325828045
20 11273167827343
21 101589943242179
22 946577526626181
23 9107029927925714

[1,1,1,2,5,16,59,246,1131,5655,30428,174835,
 1066334,6870542,46581883,331237074,2463361903,
 19112314727,154364077009,1295325828045,
 11273167827343,101589943242179,946577526626181,
 9107029927925714]

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.


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