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.

A153588 Number of resistance values that can be constructed using up to n equal resistances by arranging them in an arbitrary series-parallel arrangement.

Table of values

n a(n)
1 1
2 3
3 7
4 15
5 35
6 77
7 179
8 429
9 1039
10 2525
11 6235
12 15463
13 38513
14 96231
15 241519
16 607339
17 1529533
18 3857447
19 9743247
20 24634043
21 62335495
22 157885967
23 400211085
24 1015080877
25 2576308943
26 6542380707
27 16622493939
28 42252603207
29 107447022475
30 273337662943

List of values

[1, 3, 7, 15, 35, 77, 179, 429, 1039, 2525, 6235, 15463, 38513, 96231, 241519, 607339, 1529533, 3857447, 9743247, 24634043, 62335495, 157885967, 400211085, 1015080877, 2576308943, 6542380707, 16622493939, 42252603207, 107447022475, 273337662943]

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

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