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.

A200870 Number of 0..7 arrays x(0..n+1) of n+2 elements without any interior element greater than both neighbors or less than both neighbors.

Table of values

n a(n)
1 232
2 932
3 3704
4 14932
5 60112
6 241718
7 971416
8 3904290
9 15693816
10 63085186
11 253583656
12 1019321774
13 4097329180
14 16469898636
15 66203547550
16 266116375576
17 1069699742484
18 4299838717346
19 17283927781406
20 69475666835578

List of values

[232, 932, 3704, 14932, 60112, 241718, 971416, 3904290, 15693816, 63085186, 253583656, 1019321774, 4097329180, 16469898636, 66203547550, 266116375576, 1069699742484, 4299838717346, 17283927781406, 69475666835578]

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

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