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.

A056123 a(n) = 3*a(n-1) - a(n-2) with a(0)=1, a(1)=11.

Table of values

n a(n)
0 1
1 11
2 32
3 85
4 223
5 584
6 1529
7 4003
8 10480
9 27437
10 71831
11 188056
12 492337
13 1288955
14 3374528
15 8834629
16 23129359
17 60553448
18 158530985
19 415039507
20 1086587536
21 2844723101
22 7447581767
23 19498022200
24 51046484833
25 133641432299

List of values

[1, 11, 32, 85, 223, 584, 1529, 4003, 10480, 27437, 71831, 188056, 492337, 1288955, 3374528, 8834629, 23129359, 60553448, 158530985, 415039507, 1086587536, 2844723101, 7447581767, 19498022200, 51046484833, 133641432299]