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.

A173078 a(n) = (5*2^n - 2*(-1)^n - 9)/3.

Table of values

n a(n)
1 1
2 3
3 11
4 23
5 51
6 103
7 211
8 423
9 851
10 1703
11 3411
12 6823
13 13651
14 27303
15 54611
16 109223
17 218451
18 436903
19 873811
20 1747623
21 3495251
22 6990503
23 13981011
24 27962023
25 55924051
26 111848103
27 223696211
28 447392423
29 894784851
30 1789569703
31 3579139411

List of values

[1, 3, 11, 23, 51, 103, 211, 423, 851, 1703, 3411, 6823, 13651, 27303, 54611, 109223, 218451, 436903, 873811, 1747623, 3495251, 6990503, 13981011, 27962023, 55924051, 111848103, 223696211, 447392423, 894784851, 1789569703, 3579139411]