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.

A187925 Coefficient of x^n in (1+x+x^2+x^3+x^4)^n.

Table of values

n a(n)
0 1
1 1
2 3
3 10
4 35
5 121
6 426
7 1520
8 5475
9 19855
10 72403
11 265233
12 975338
13 3598180
14 13311000
15 49360405
16 183424355
17 682870587
18 2546441085
19 9509714340
20 35561166195
21 133138728845
22 499005557515
23 1872137642125
24 7030166054250
25 26421479140746
26 99376657487396

List of values

[1, 1, 3, 10, 35, 121, 426, 1520, 5475, 19855, 72403, 265233, 975338, 3598180, 13311000, 49360405, 183424355, 682870587, 2546441085, 9509714340, 35561166195, 133138728845, 499005557515, 1872137642125, 7030166054250, 26421479140746, 99376657487396]

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

Content is available under The OEIS End-User License Agreement.