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.

A295731 a(n) = a(n-1) + 3*a(n-2) -2*a(n-3) - 2*a(n-4), where a(0) = -1, a(1) = -1, a(2) = 0, a(3) = 1.

Table of values

n a(n)
0 -1
1 -1
2 0
3 1
4 5
5 10
6 23
7 41
8 80
9 137
10 249
11 418
12 731
13 1213
14 2072
15 3413
16 5741
17 9410
18 15663
19 25585
20 42272
21 68881
22 113201
23 184130
24 301427
25 489653
26 799272
27 1297117
28 2112773
29 3426274
30 5571815
31 9030857
32 14668208
33 23764601
34 38563881
35 62459554
36 101285579
37 164007277

List of values

[-1, -1, 0, 1, 5, 10, 23, 41, 80, 137, 249, 418, 731, 1213, 2072, 3413, 5741, 9410, 15663, 25585, 42272, 68881, 113201, 184130, 301427, 489653, 799272, 1297117, 2112773, 3426274, 5571815, 9030857, 14668208, 23764601, 38563881, 62459554, 101285579, 164007277]