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.

A090636 Trajectory of 15 under the map k -> A003415(k) (taking the arithmetic derivative).

Table of values

n a(n)
1 15
2 8
3 12
4 16
5 32
6 80
7 176
8 368
9 752
10 1520
11 3424
12 8592
13 20096
14 70464
15 235072
16 705280
17 3023616
18 13223680
19 55540736
20 278539264
21 1392697344
22 9541095424
23 58609614848
24 410267320320
25 3397142953984
26 24143851798528
27 176071227916288
28 1232666139967488

List of values

[15, 8, 12, 16, 32, 80, 176, 368, 752, 1520, 3424, 8592, 20096, 70464, 235072, 705280, 3023616, 13223680, 55540736, 278539264, 1392697344, 9541095424, 58609614848, 410267320320, 3397142953984, 24143851798528, 176071227916288, 1232666139967488]

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

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