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.

A189742 a(1)=4, a(2)=3, a(n) = 4*a(n-1) + 3*a(n-2).

Table of values

n a(n)
1 4
2 3
3 24
4 105
5 492
6 2283
7 10608
8 49281
9 228948
10 1063635
11 4941384
12 22956441
13 106649916
14 495468987
15 2301825696
16 10693709745
17 49680316068
18 230802393507
19 1072250522232
20 4981409269449
21 23142388644492
22 107513782386315
23 499482295478736
24 2320470529073889

List of values

[4, 3, 24, 105, 492, 2283, 10608, 49281, 228948, 1063635, 4941384, 22956441, 106649916, 495468987, 2301825696, 10693709745, 49680316068, 230802393507, 1072250522232, 4981409269449, 23142388644492, 107513782386315, 499482295478736, 2320470529073889]