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.

A219598 Number of 5Xn arrays of the minimum value of corresponding elements and their horizontal or vertical neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 5Xn array.

Table of values

n a(n)
1 15
2 87
3 705
4 4350
5 26006
6 156964
7 939006
8 5466749
9 30837420
10 168947111
11 901097968
12 4680202369
13 23651533225
14 116192356397
15 554663937245
16 2572846819549
17 11600123422679
18 50863765123285
19 217051630988778
20 902189285684499

List of values

[15, 87, 705, 4350, 26006, 156964, 939006, 5466749, 30837420, 168947111, 901097968, 4680202369, 23651533225, 116192356397, 554663937245, 2572846819549, 11600123422679, 50863765123285, 217051630988778, 902189285684499]

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

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