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.

A275858 a(n) = floor(c*r*a(n-1)) - floor(d*s*a(n-2)), where r = (1+sqrt(5))/2, s = r/(r-1), c = 1, d = 1, a(0) = 1, a(1) = 1.

Table of values

n a(n)
0 1
1 1
2 -1
3 -4
4 -4
5 4
6 17
7 17
8 -17
9 -72
10 -72
11 72
12 305
13 305
14 -305
15 -1292
16 -1292
17 1292
18 5473
19 5473
20 -5473
21 -23184
22 -23184
23 23184
24 98209
25 98209
26 -98209
27 -416020
28 -416020
29 416020
30 1762289
31 1762289
32 -1762289
33 -7465176
34 -7465176
35 7465176
36 31622993
37 31622993

List of values

[1, 1, -1, -4, -4, 4, 17, 17, -17, -72, -72, 72, 305, 305, -305, -1292, -1292, 1292, 5473, 5473, -5473, -23184, -23184, 23184, 98209, 98209, -98209, -416020, -416020, 416020, 1762289, 1762289, -1762289, -7465176, -7465176, 7465176, 31622993, 31622993]