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.

A361673 Constant term in the expansion of (1 + x*y + y*z + z*x + 1/(x*y*z))^n.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 61
6 361
7 1261
8 3361
9 7561
10 34021
11 235621
12 1294921
13 5482621
14 19039021
15 65345281
16 286147681
17 1511480881
18 7688794681
19 34337600281
20 138221512741
21 554603041441
22 2454508134541
23 11874549049441
24 57412094595241
25 261925516443361
26 1134301869703861

List of values

[1, 1, 1, 1, 1, 61, 361, 1261, 3361, 7561, 34021, 235621, 1294921, 5482621, 19039021, 65345281, 286147681, 1511480881, 7688794681, 34337600281, 138221512741, 554603041441, 2454508134541, 11874549049441, 57412094595241, 261925516443361, 1134301869703861]