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.

A186925 Coefficient of x^n in (1+n*x+x^2)^n.

Table of values

n a(n)
0 1
1 1
2 6
3 45
4 454
5 5775
6 88796
7 1602447
8 33213510
9 777665691
10 20302315252
11 584774029983
12 18422140045596
13 630132567760345
14 23257790717110392
15 921362075184792825
16 38994274473840538182
17 1755943506127367745795
18 83829045032101462204100
19 4229207755493569286374167

List of values

[1, 1, 6, 45, 454, 5775, 88796, 1602447, 33213510, 777665691, 20302315252, 584774029983, 18422140045596, 630132567760345, 23257790717110392, 921362075184792825, 38994274473840538182, 1755943506127367745795, 83829045032101462204100, 4229207755493569286374167]

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

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