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.

A111572 a(n) = a(n-1) + a(n-3) + a(n-4), n >= 4, with initial terms -1,3,2,1.

Table of values

n a(n)
0 -1
1 3
2 2
3 1
4 3
5 8
6 11
7 15
8 26
9 45
10 71
11 112
12 183
13 299
14 482
15 777
16 1259
17 2040
18 3299
19 5335
20 8634
21 13973
22 22607
23 36576
24 59183
25 95763
26 154946
27 250705
28 405651
29 656360
30 1062011
31 1718367
32 2780378
33 4498749
34 7279127
35 11777872
36 19056999
37 30834875
38 49891874
39 80726745

List of values

[-1, 3, 2, 1, 3, 8, 11, 15, 26, 45, 71, 112, 183, 299, 482, 777, 1259, 2040, 3299, 5335, 8634, 13973, 22607, 36576, 59183, 95763, 154946, 250705, 405651, 656360, 1062011, 1718367, 2780378, 4498749, 7279127, 11777872, 19056999, 30834875, 49891874, 80726745]