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.

A084978 Number of ways to represent n as a+b*(c+d*(e+f*(...x+y*(z)...))) in positive integers.

Table of values

n a(n)
1 1
2 2
3 5
4 11
5 25
6 51
7 110
8 221
9 456
10 918
11 1864
12 3729
13 7528
14 15057
15 30227
16 60485
17 121205
18 242411
19 485337
20 970675
21 1942307
22 3884730
23 7771327
24 15542655
25 31089330
26 62178686
27 124364903
28 248730268
29 497475717
30 994951435
31 1989934099
32 3979868199

List of values

[1, 2, 5, 11, 25, 51, 110, 221, 456, 918, 1864, 3729, 7528, 15057, 30227, 60485, 121205, 242411, 485337, 970675, 1942307, 3884730, 7771327, 15542655, 31089330, 62178686, 124364903, 248730268, 497475717, 994951435, 1989934099, 3979868199]