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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.

A063697 Positions of positive coefficients in cyclotomic polynomial Phi_n(x), A063696 in binary.

Table of values

n a(n)
0 0
1 10
2 11
3 111
4 101
5 11111
6 101
7 1111111
8 10001
9 1001001
10 10101
11 11111111111
12 10001
13 1111111111111
14 1010101
15 100101001
16 100000001
17 11111111111111111
18 1000001
19 1111111111111111111
20 100010001
21 1001001001001
22 10101010101

List of values

[0, 10, 11, 111, 101, 11111, 101, 1111111, 10001, 1001001, 10101, 11111111111, 10001, 1111111111111, 1010101, 100101001, 100000001, 11111111111111111, 1000001, 1111111111111111111, 100010001, 1001001001001, 10101010101]

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

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