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.

A118415 a(n) = (4*n - 3) * 2^(n - 1).

Table of values

n a(n)
1 1
2 10
3 36
4 104
5 272
6 672
7 1600
8 3712
9 8448
10 18944
11 41984
12 92160
13 200704
14 434176
15 933888
16 1998848
17 4259840
18 9043968
19 19136512
20 40370176
21 84934656
22 178257920
23 373293056
24 780140544
25 1627389952
26 3388997632
27 7046430720
28 14629732352
29 30333206528
30 62813896704

List of values

[1, 10, 36, 104, 272, 672, 1600, 3712, 8448, 18944, 41984, 92160, 200704, 434176, 933888, 1998848, 4259840, 9043968, 19136512, 40370176, 84934656, 178257920, 373293056, 780140544, 1627389952, 3388997632, 7046430720, 14629732352, 30333206528, 62813896704]