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.

A127595 a(n) = F(4n) - 2F(2n) where F(n) = Fibonacci numbers A000045.

Table of values

n a(n)
0 0
1 1
2 15
3 128
4 945
5 6655
6 46080
7 317057
8 2176335
9 14925184
10 102320625
11 701373311
12 4807434240
13 32951037313
14 225850798095
15 1548007091840
16 10610205501105
17 72723448842367
18 498453982018560
19 3416454544730369
20 23416728143799375

List of values

[0, 1, 15, 128, 945, 6655, 46080, 317057, 2176335, 14925184, 102320625, 701373311, 4807434240, 32951037313, 225850798095, 1548007091840, 10610205501105, 72723448842367, 498453982018560, 3416454544730369, 23416728143799375]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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