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.

A200872 Number of 0..n arrays x(0..3) of 4 elements without any interior element greater than both neighbors or less than both neighbors.

Table of values

n a(n)
1 10
2 37
3 94
4 195
5 356
6 595
7 932
8 1389
9 1990
10 2761
11 3730
12 4927
13 6384
14 8135
15 10216
16 12665
17 15522
18 18829
19 22630
20 26971
21 31900
22 37467
23 43724
24 50725
25 58526
26 67185
27 76762
28 87319
29 98920
30 111631
31 125520
32 140657
33 157114
34 174965
35 194286
36 215155
37 237652
38 261859

List of values

[10, 37, 94, 195, 356, 595, 932, 1389, 1990, 2761, 3730, 4927, 6384, 8135, 10216, 12665, 15522, 18829, 22630, 26971, 31900, 37467, 43724, 50725, 58526, 67185, 76762, 87319, 98920, 111631, 125520, 140657, 157114, 174965, 194286, 215155, 237652, 261859]

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

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