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.

A188361 Number of arrangements of 6 numbers x(i) in -n..n with the sum of x(i)*x(i+1) equal to zero.

Table of values

n a(n)
1 197
2 1953
3 7369
4 22229
5 45801
6 100885
7 163745
8 283893
9 438373
10 678617
11 911709
12 1386673
13 1772141
14 2399001
15 3175561
16 4167365
17 5010369
18 6549541
19 7719713
20 9789981
21 11867065
22 14232893
23 16279425
24 20224801

List of values

[197, 1953, 7369, 22229, 45801, 100885, 163745, 283893, 438373, 678617, 911709, 1386673, 1772141, 2399001, 3175561, 4167365, 5010369, 6549541, 7719713, 9789981, 11867065, 14232893, 16279425, 20224801]