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.

A248440 Number of length 7+2 0..n arrays with every three consecutive terms having the sum of some two elements equal to twice the third.

Table of values

n a(n)
1 2
2 9
3 52
4 389
5 1014
6 2021
7 3200
8 5589
9 8218
10 11401
11 14696
12 18947
13 23274
14 27861
15 32772
16 39481
17 46246
18 53633
19 61036
20 69369
21 77910
22 86569
23 95228
24 105879
25 116826
26 127859
27 139132
28 150965
29 162798
30 175561
31 188324
32 203137
33 218098
34 233121
35 248604
36 265287

List of values

[2, 9, 52, 389, 1014, 2021, 3200, 5589, 8218, 11401, 14696, 18947, 23274, 27861, 32772, 39481, 46246, 53633, 61036, 69369, 77910, 86569, 95228, 105879, 116826, 127859, 139132, 150965, 162798, 175561, 188324, 203137, 218098, 233121, 248604, 265287]

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

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