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.

A249470 Number of length 4+4 0..n arrays with no five consecutive terms having four times any element equal to the sum of the remaining four.

Table of values

n a(n)
1 216
2 2802
3 34832
4 206428
5 980718
6 3512232
7 10671554
8 28408106
9 68141702
10 149985134
11 308128976
12 596635030
13 1099154100
14 1939520516
15 3298783802
16 5428583306
17 8678985766
18 13520275360
19 20580791722
20 30686017266
21 44896600642

List of values

[216, 2802, 34832, 206428, 980718, 3512232, 10671554, 28408106, 68141702, 149985134, 308128976, 596635030, 1099154100, 1939520516, 3298783802, 5428583306, 8678985766, 13520275360, 20580791722, 30686017266, 44896600642]

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

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