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.

A099971 Write (sqrt(5)-1)/2 as a binary fraction; read this from left to right and whenever a 1 appears, note the integer formed by reading leftwards from that 1.

Table of values

n a(n)
0 1
1 9
2 25
3 57
4 121
5 1145
6 3193
7 11385
8 27769
9 60537
10 191609
11 453753
12 978041
13 2026617
14 10415225
15 27192441
16 94301305
17 228519033
18 496954489
19 2644438137
20 11234372729
21 28414241913
22 62773980281
23 131493457017
24 268932410489
25 543810317433

List of values

[1, 9, 25, 57, 121, 1145, 3193, 11385, 27769, 60537, 191609, 453753, 978041, 2026617, 10415225, 27192441, 94301305, 228519033, 496954489, 2644438137, 11234372729, 28414241913, 62773980281, 131493457017, 268932410489, 543810317433]

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

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