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.

A211845 Number of nonnegative integer arrays of length n+9 with new values 0 upwards introduced in order, no three adjacent elements all unequal, and containing the value 5.

Table of values

n a(n)
1 1
2 11
3 82
4 494
5 2619
6 12713
7 57913
8 251481
9 1052383
10 4277451
11 16986189
12 66202629
13 254144210
14 963755936
15 3618833405
16 13481785125
17 49915401836
18 183932105682
19 675399816338
20 2474127510634
21 9050295230250
22 33087054691466
23 120988345056414

List of values

[1, 11, 82, 494, 2619, 12713, 57913, 251481, 1052383, 4277451, 16986189, 66202629, 254144210, 963755936, 3618833405, 13481785125, 49915401836, 183932105682, 675399816338, 2474127510634, 9050295230250, 33087054691466, 120988345056414]

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

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