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.

A158561 a(n) = ((2^n)*((2^n)+1) - (2^(n-1))*((2^(n-1))+1))/2, a(1)=3.

Table of values

n a(n)
1 3
2 7
3 26
4 100
5 392
6 1552
7 6176
8 24640
9 98432
10 393472
11 1573376
12 6292480
13 25167872
14 100667392
15 402661376
16 1610629120
17 6442483712
18 25769869312
19 103079346176
20 412317122560
21 1649267965952
22 6597070815232
23 26388281163776
24 105553120460800
25 422212473454592

List of values

[3, 7, 26, 100, 392, 1552, 6176, 24640, 98432, 393472, 1573376, 6292480, 25167872, 100667392, 402661376, 1610629120, 6442483712, 25769869312, 103079346176, 412317122560, 1649267965952, 6597070815232, 26388281163776, 105553120460800, 422212473454592]