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A048468 formatted as a simple table:

n a(n)
0 1
1 9
2 26
3 62
4 138
5 298
6 634
7 1338
8 2810
9 5882
10 12282
11 25594
12 53242
13 110586
14 229370
15 475130
16 983034
17 2031610
18 4194298
19 8650746
20 17825786
21 36700154
22 75497466
23 155189242
24 318767098
25 654311418
26 1342177274
27 2751463418

[1,9,26,62,138,298,634,1338,2810,5882,12282,25594,
 53242,110586,229370,475130,983034,2031610,4194298,
 8650746,17825786,36700154,75497466,155189242,
 318767098,654311418,1342177274,2751463418]

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.


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