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.

A249471 Number of length 5+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)
1 416
2 6872
3 119932
4 884728
5 5174842
6 21824440
7 76550058
8 231236220
9 620927172
10 1512868480
11 3409871172
12 7187658694
13 14321688284
14 27179247012
15 49484565130
16 86796151488
17 147351090962
18 242923972126
19 390163791394
20 612170875944

List of values

[416, 6872, 119932, 884728, 5174842, 21824440, 76550058, 231236220, 620927172, 1512868480, 3409871172, 7187658694, 14321688284, 27179247012, 49484565130, 86796151488, 147351090962, 242923972126, 390163791394, 612170875944]

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

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