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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.

A382307 Position of start of first run of alternating bit values in the base-2 representation of Pi, or -1 if no such run exists.

Table of values

n a(n)
1 1
2 2
3 2
4 19
5 19
6 19
7 19
8 19
9 1195
10 1697
11 1890
12 1890
13 1890
14 1890
15 15081
16 63795
17 206825
18 206825
19 206825
20 470577
21 470577
22 557265
23 557265
24 557265
25 557265
26 557265
27 447666572
28 447666572
29 699793337
30 699793337
31 2049646803
32 2250772991

List of values

[1, 2, 2, 19, 19, 19, 19, 19, 1195, 1697, 1890, 1890, 1890, 1890, 15081, 63795, 206825, 206825, 206825, 470577, 470577, 557265, 557265, 557265, 557265, 557265, 447666572, 447666572, 699793337, 699793337, 2049646803, 2250772991]

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

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