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.

A383222 Coefficient of x^4 in expansion of (x+2) * (x+5) * ... * (x+3*n-1).

Table of values

n a(n)
0 0
1 0
2 0
3 0
4 1
5 40
6 1275
7 39655
8 1276009
9 43382934
10 1570298610
11 60630265740
12 2495678898636
13 109326548645600
14 5085420626585936
15 250576924194171120
16 13046999027750243984
17 716156618057417103008
18 41347880768363832470304
19 2505655766070932929630464

List of values

[0, 0, 0, 0, 1, 40, 1275, 39655, 1276009, 43382934, 1570298610, 60630265740, 2495678898636, 109326548645600, 5085420626585936, 250576924194171120, 13046999027750243984, 716156618057417103008, 41347880768363832470304, 2505655766070932929630464]

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

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