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.

A248457 Number of length n+2 0..4 arrays with no three consecutive terms having the sum of any two elements equal to twice the third.

Table of values

n a(n)
1 96
2 380
3 1512
4 6040
5 24160
6 96736
7 387488
8 1552448
9 6220480
10 24926080
11 99883840
12 400260160
13 1603955712
14 6427525312
15 25757039296
16 103216337152
17 413619611968
18 1657501354048
19 6642119813120
20 26617026736320
21 106662654436544

List of values

[96, 380, 1512, 6040, 24160, 96736, 387488, 1552448, 6220480, 24926080, 99883840, 400260160, 1603955712, 6427525312, 25757039296, 103216337152, 413619611968, 1657501354048, 6642119813120, 26617026736320, 106662654436544]

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

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