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.

A246642 Sequence appearing in the curvature of a certain four-circle touching problem: (-3 + 5*A007805(n))/2.

Table of values

n a(n)
0 1
1 41
2 761
3 13681
4 245521
5 4405721
6 79057481
7 1418628961
8 25456263841
9 456794120201
10 8196837899801
11 147086288076241
12 2639356347472561
13 47361327966429881
14 849864547048265321
15 15250200518902345921
16 273653744793193961281
17 4910517205758588957161
18 88115655958861407267641

List of values

[1, 41, 761, 13681, 245521, 4405721, 79057481, 1418628961, 25456263841, 456794120201, 8196837899801, 147086288076241, 2639356347472561, 47361327966429881, 849864547048265321, 15250200518902345921, 273653744793193961281, 4910517205758588957161, 88115655958861407267641]

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

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