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A000991 formatted as a simple table:

n a(n)
1 1
2 3
3 6
4 12
5 21
6 40
7 67
8 117
9 193
10 319
11 510
12 818
13 1274
14 1983
15 3032
16 4610
17 6915
18 10324
19 15235
20 22371
21 32554
22 47119
23 67689
24 96763
25 137404
26 194211
27 272939
28 381872

[1,3,6,12,21,40,67,117,193,319,510,818,1274,1983,
 3032,4610,6915,10324,15235,22371,32554,47119,
 67689,96763,137404,194211,272939,381872]

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Last modified December 19 12:50 EST 2009. Contains 171053 sequences.


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