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.

A084128 a(n) = 4*a(n-1) + 4*a(n-2), a(0)=1, a(1)=2.

Table of values

n a(n)
0 1
1 2
2 12
3 56
4 272
5 1312
6 6336
7 30592
8 147712
9 713216
10 3443712
11 16627712
12 80285696
13 387653632
14 1871757312
15 9037643776
16 43637604352
17 210700992512
18 1017354387456
19 4912221519872
20 23718303629312
21 114522100596736
22 552961616904192
23 2669934870003712

List of values

[1, 2, 12, 56, 272, 1312, 6336, 30592, 147712, 713216, 3443712, 16627712, 80285696, 387653632, 1871757312, 9037643776, 43637604352, 210700992512, 1017354387456, 4912221519872, 23718303629312, 114522100596736, 552961616904192, 2669934870003712]