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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A034990 a(n)^2 is smallest square starting with a string of n 7's.

Table of values

n a(n)
1 27
2 88
3 882
4 8819
5 278886
6 881917
7 8819171
8 8819171
9 2788866754
10 2788866755
11 27888667551
12 881917103688
13 8819171036882
14 278886675511358
15 2788866755113584
16 27888667551135851
17 88191710368819686
18 278886675511358516
19 8819171036881968635
20 8819171036881968635

List of values

[27, 88, 882, 8819, 278886, 881917, 8819171, 8819171, 2788866754, 2788866755, 27888667551, 881917103688, 8819171036882, 278886675511358, 2788866755113584, 27888667551135851, 88191710368819686, 278886675511358516, 8819171036881968635, 8819171036881968635]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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