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.

A186258 a(n) = 6*b_6(n)+5, where b_6 lists the indices of zeros of the sequence A261306: u(n) = abs(u(n-1)-gcd(u(n-1),6*n-1)), u(1) = 1.

Table of values

n a(n)
1 17
2 101
3 461
4 2801
5 19553
6 136649
7 955841
8 6684749
9 46777229
10 327440609
11 2292083093
12 16044575777
13 112312028681
14 786179138273
15 5503253967269
16 38522774910593
17 269659405576049
18 1887615818410877
19 13213310659503893
20 92493174561607361

List of values

[17, 101, 461, 2801, 19553, 136649, 955841, 6684749, 46777229, 327440609, 2292083093, 16044575777, 112312028681, 786179138273, 5503253967269, 38522774910593, 269659405576049, 1887615818410877, 13213310659503893, 92493174561607361]