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.

A341250 a(n) = 5*a(n-1) - 4*a(n-3) for n >= 4, where a(1) = 1, a(2) = 3, a(3) = 13.

Table of values

n a(n)
1 1
2 3
3 13
4 61
5 293
6 1413
7 6821
8 32933
9 159013
10 767781
11 3707173
12 17899813
13 86427941
14 417311013
15 2014955813
16 9729067301
17 46976092453
18 226820639013
19 1095186925861
20 5288030259493
21 25532868741413
22 123283596003621
23 595265858980133
24 2874197819935013

List of values

[1, 3, 13, 61, 293, 1413, 6821, 32933, 159013, 767781, 3707173, 17899813, 86427941, 417311013, 2014955813, 9729067301, 46976092453, 226820639013, 1095186925861, 5288030259493, 25532868741413, 123283596003621, 595265858980133, 2874197819935013]