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.

A099969 Write 1/e 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 2
1 10
2 26
3 58
4 122
5 1146
6 5242
7 13434
8 46202
9 177274
10 701562
11 1750138
12 18527354
13 52081786
14 186299514
15 454734970
16 4749702266
17 21929571450
18 56289309818
19 331167216762
20 880923030650
21 1980434658426
22 6378481169530
23 15174574191738

List of values

[2, 10, 26, 58, 122, 1146, 5242, 13434, 46202, 177274, 701562, 1750138, 18527354, 52081786, 186299514, 454734970, 4749702266, 21929571450, 56289309818, 331167216762, 880923030650, 1980434658426, 6378481169530, 15174574191738]

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

Content is available under The OEIS End-User License Agreement.