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.

A251423 Number of length n+2 0..3 arrays with the sum of the maximum minus twice the median plus the minimum of adjacent triples multiplied by some arrangement of +-1 equal to zero.

Table of values

n a(n)
1 16
2 116
3 380
4 1888
5 7458
6 31980
7 127566
8 520568
9 2080650
10 8370976
11 33475854
12 134136344
13 536498498
14 2147099168
15 8588150878
16 34357874584
17 137430314336
18 549746688148
19 2198981195384
20 8796047678504
21 35184165954884
22 140737260054372

List of values

[16, 116, 380, 1888, 7458, 31980, 127566, 520568, 2080650, 8370976, 33475854, 134136344, 536498498, 2147099168, 8588150878, 34357874584, 137430314336, 549746688148, 2198981195384, 8796047678504, 35184165954884, 140737260054372]

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

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