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A139047 formatted as a simple table:

n a(n)
0 1
1 1
2 2
3 3
4 5
5 1
6 6
7 7
8 13
9 20
10 1
11 21
12 1
13 22
14 1
15 23
16 24
17 47
18 71
19 118
20 1
21 119
22 120
23 239
24 359
25 598
26 1
27 599
28 600
29 1199
30 1799
31 2998
32 1
33 2999
34 3000
35 1
36 3001
37 3002
38 1
39 3003
40 3004 

[1,1,2,3,5,1,6,7,13,20,1,21,1,22,1,23,24,47,71,
 118,1,119,120,239,359,598,1,599,600,1199,1799,
 2998,1,2999,3000,1,3001,3002,1,3003,3004]

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

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