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A004255 formatted as a simple table:

n a(n)
1 1
2 3
3 9
4 25
5 60
6 126
7 238
8 414
9 675
10 1045
11 1551
12 2223
13 3094
14 4200
15 5580
16 7276
17 9333
18 11799
19 14725
20 18165
21 22176
22 26818
23 32154
24 38250
25 45175
26 53001
27 61803
28 71659

[1,3,9,25,60,126,238,414,675,1045,1551,2223,3094,
 4200,5580,7276,9333,11799,14725,18165,22176,26818,
 32154,38250,45175,53001,61803,71659]

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.


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