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.

A215829 a(n) = -3*a(n-1) + 9*a(n-2) + 3*a(n-3), with a(0)=3, a(1)=-3, a(2)=27.

Table of values

n a(n)
0 3
1 -3
2 27
3 -99
4 531
5 -2403
6 11691
7 -55107
8 263331
9 -1250883
10 5957307
11 -28339875
12 134882739
13 -641835171
14 3054430539
15 -14535159939
16 69169849155
17 -329162695299
18 1566411248475
19 -7454188455651
20 35472778517331
21 -168806797907427
22 803312835011307

List of values

[3, -3, 27, -99, 531, -2403, 11691, -55107, 263331, -1250883, 5957307, -28339875, 134882739, -641835171, 3054430539, -14535159939, 69169849155, -329162695299, 1566411248475, -7454188455651, 35472778517331, -168806797907427, 803312835011307]