cp's OEIS Frontend

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.

A186253 Indices of zeros of the sequence u(n)=abs(u(n-1)-gcd(u(n-1),n-1)), u(1)=1.

Table of values

n a(n)
1 2
2 5
3 11
4 23
5 47
6 79
7 157
8 313
9 619
10 1237
11 2473
12 4909
13 9817
14 19603
15 39199
16 78193
17 156019
18 311347
19 622669
20 1244149
21 2487739
22 4975111
23 9950221
24 19900399
25 39800797
26 79601461
27 159202369
28 318404629
29 636788881
30 1273577761
31 2547155419
32 5094310069
33 10188620041

List of values

[2, 5, 11, 23, 47, 79, 157, 313, 619, 1237, 2473, 4909, 9817, 19603, 39199, 78193, 156019, 311347, 622669, 1244149, 2487739, 4975111, 9950221, 19900399, 39800797, 79601461, 159202369, 318404629, 636788881, 1273577761, 2547155419, 5094310069, 10188620041]

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

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