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.

A104629 Expansion of (1-2*x-sqrt(1-4*x))/(x^2 * (1+2*x+sqrt(1-4*x))).

Table of values

n a(n)
0 1
1 2
2 6
3 18
4 57
5 186
6 622
7 2120
8 7338
9 25724
10 91144
11 325878
12 1174281
13 4260282
14 15548694
15 57048048
16 210295326
17 778483932
18 2892818244
19 10786724388
20 40347919626
21 151355847012
22 569274150156
23 2146336125648
24 8110508473252

List of values

[1, 2, 6, 18, 57, 186, 622, 2120, 7338, 25724, 91144, 325878, 1174281, 4260282, 15548694, 57048048, 210295326, 778483932, 2892818244, 10786724388, 40347919626, 151355847012, 569274150156, 2146336125648, 8110508473252]

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

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