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.

A137212 a(n) = 5*a(n-1) - 5*a(n-2) - 3*a(n-3).

Table of values

n a(n)
0 0
1 0
2 1
3 5
4 20
5 72
6 245
7 805
8 2584
9 8160
10 25465
11 78773
12 242060
13 740040
14 2253581
15 6841525
16 20719600
17 62629632
18 189025585
19 569820965
20 1716088004
21 5164258440
22 15531389285
23 46687390213
24 140287229320
25 421405027680
26 1265526821161

List of values

[0, 0, 1, 5, 20, 72, 245, 805, 2584, 8160, 25465, 78773, 242060, 740040, 2253581, 6841525, 20719600, 62629632, 189025585, 569820965, 1716088004, 5164258440, 15531389285, 46687390213, 140287229320, 421405027680, 1265526821161]