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.

A252173 Number of length n+2 0..4 arrays with the sum of the maximum minus the minimum of adjacent triples multiplied by some arrangement of +-1 equal to zero.

Table of values

n a(n)
1 5
2 285
3 687
4 6361
5 30315
6 179225
7 907249
8 4728833
9 23847033
10 120644221
11 605522767
12 3038459385
13 15215512685
14 76167143089
15 381063555999
16 1906111738921
17 9532798497759
18 47671420448717
19 238379347788679
20 1191968945583273

List of values

[5, 285, 687, 6361, 30315, 179225, 907249, 4728833, 23847033, 120644221, 605522767, 3038459385, 15215512685, 76167143089, 381063555999, 1906111738921, 9532798497759, 47671420448717, 238379347788679, 1191968945583273]

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

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