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.

A130168 a(n) = (b(n) + b(n+1))/3, where b(n) = A000366(n).

Table of values

n a(n)
2 1
3 3
4 15
5 111
6 1131
7 15123
8 256335
9 5364471
10 135751731
11 4084163643
12 144039790455
13 5884504366431
14 275643776229531
15 14673941326078563
16 880908054392169375
17 59226468571935857991
18 4432461082611507366531
19 367227420727722013775883
20 33514867695588319595233095

List of values

[1, 3, 15, 111, 1131, 15123, 256335, 5364471, 135751731, 4084163643, 144039790455, 5884504366431, 275643776229531, 14673941326078563, 880908054392169375, 59226468571935857991, 4432461082611507366531, 367227420727722013775883, 33514867695588319595233095]

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

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