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A002810 formatted as a simple table:

n a(n)
1 1
2 7
3 11
4 27
5 77
6 107
7 111
8 127
9 177
10 777
11 1127
12 1177
13 1777
14 7777
15 11777
16 27777
17 77777
18 107777
19 111777
20 127777
21 177777
22 777777
23 1127777
24 1177777
25 1777777
26 7777777

[1,7,11,27,77,107,111,127,177,777,1127,1177,1777,
 7777,11777,27777,77777,107777,111777,127777,
 177777,777777,1127777,1177777,1777777,7777777]

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Last modified December 20 00:58 EST 2009. Contains 171054 sequences.


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