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.

A155181 a(n)=5*a(n-1)+a(n-2), n>2 ; a(0)=1, a(1)=4, a(2)=20 .

Table of values

n a(n)
0 1
1 4
2 20
3 104
4 540
5 2804
6 14560
7 75604
8 392580
9 2038504
10 10585100
11 54964004
12 285405120
13 1481989604
14 7695353140
15 39958755304
16 207489129660
17 1077404403604
18 5594511147680
19 29049960142004
20 150844311857700
21 783271519430504

List of values

[1, 4, 20, 104, 540, 2804, 14560, 75604, 392580, 2038504, 10585100, 54964004, 285405120, 1481989604, 7695353140, 39958755304, 207489129660, 1077404403604, 5594511147680, 29049960142004, 150844311857700, 783271519430504]