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.

A124820 Expansion of (1-x)/(1-4*x+3*x^2-x^3).

Table of values

n a(n)
0 1
1 3
2 9
3 28
4 88
5 277
6 872
7 2745
8 8641
9 27201
10 85626
11 269542
12 848491
13 2670964
14 8407925
15 26467299
16 83316385
17 262271568
18 825604416
19 2598919345
20 8181135700
21 25753389181
22 81069068969
23 255197244033
24 803335158406
25 2528817970494

List of values

[1, 3, 9, 28, 88, 277, 872, 2745, 8641, 27201, 85626, 269542, 848491, 2670964, 8407925, 26467299, 83316385, 262271568, 825604416, 2598919345, 8181135700, 25753389181, 81069068969, 255197244033, 803335158406, 2528817970494]

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

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