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.

A135365 a(n) = 3*a(n-1) - a(n-3) + 3*a(n-4), with initial values 1,3,9,11.

Table of values

n a(n)
0 1
1 3
2 9
3 11
4 33
5 99
6 313
7 939
8 2817
9 8435
10 25305
11 75915
12 227761
13 683283
14 2049849
15 6149531
16 18448593
17 55345779
18 166037353
19 498112059
20 1494336177
21 4483008515
22 13449025545
23 40347076635
24 121041229921
25 363123689763
26 1089371069289
27 3268113207851
28 9804339623553

List of values

[1, 3, 9, 11, 33, 99, 313, 939, 2817, 8435, 25305, 75915, 227761, 683283, 2049849, 6149531, 18448593, 55345779, 166037353, 498112059, 1494336177, 4483008515, 13449025545, 40347076635, 121041229921, 363123689763, 1089371069289, 3268113207851, 9804339623553]