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.

A122206 Number of sequences b with last index n with b(0) = 1, b(i+1) = b(i)+d where d|b(i).

Table of values

n a(n)
0 1
1 1
2 2
3 5
4 17
5 66
6 307
7 1619
8 9668
9 64112
10 469936
11 3773496
12 32997159
13 312542002
14 3192352420
15 35023164817
16 411288004670
17 5154265796088
18 68746349160704
19 973526723323087
20 14605620692012861
21 231694886107899371

List of values

[1, 1, 2, 5, 17, 66, 307, 1619, 9668, 64112, 469936, 3773496, 32997159, 312542002, 3192352420, 35023164817, 411288004670, 5154265796088, 68746349160704, 973526723323087, 14605620692012861, 231694886107899371]

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

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