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.

A098559 Expansion of e.g.f. (1+3*x)/(1-3*x).

Table of values

n a(n)
0 1
1 6
2 36
3 324
4 3888
5 58320
6 1049760
7 22044960
8 529079040
9 14285134080
10 428554022400
11 14142282739200
12 509122178611200
13 19855764965836800
14 833942128565145600
15 37527395785431552000
16 1801314997700714496000
17 91867064882736439296000
18 4960821503667767721984000

List of values

[1, 6, 36, 324, 3888, 58320, 1049760, 22044960, 529079040, 14285134080, 428554022400, 14142282739200, 509122178611200, 19855764965836800, 833942128565145600, 37527395785431552000, 1801314997700714496000, 91867064882736439296000, 4960821503667767721984000]

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

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