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A020454 as a simple table

n a(n)
1 11
2 61
3 661
4 6661
5 11161
6 16111
7 16661
8 66161
9 111611
10 161611
11 611111
12 616111
13 1111661
14 1611161
15 1616161
16 1616611
17 1661111
18 1661161
19 1666111
20 6111661
21 6116111
22 6116161
23 6161161
24 6611611
25 6661111
26 6661661
27 11111161
28 11166611
29 11616611

[11,61,661,6661,11161,16111,16661,66161,111611,
 161611,611111,616111,1111661,1611161,1616161,
 1616611,1661111,1661161,1666111,6111661,6116111,
 6116161,6161161,6611611,6661111,6661661,11111161,
 11166611,11616611]

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Last modified May 26 17:38 EDT 2019. Contains 323597 sequences. (Running on oeis4.)