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.

A123750 Number of distinct resistances possible with at most n arbitrary resistors connected in series or in parallel.

Table of values

n a(n)
1 1
2 4
3 17
4 94
5 667
6 5752
7 58053
8 669970
9 8698991
10 125499820
11 1991637529
12 34479906886
13 646671878595
14 13061304372448
15 282652185684845
16 6524494505342842
17 160018549741811479
18 4155443426929596436
19 113905714869793400001
20 3286624199431263921838

List of values

[1, 4, 17, 94, 667, 5752, 58053, 669970, 8698991, 125499820, 1991637529, 34479906886, 646671878595, 13061304372448, 282652185684845, 6524494505342842, 160018549741811479, 4155443426929596436, 113905714869793400001, 3286624199431263921838]