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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.

A218515 Number of n X n arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random 0..3 n X n array.

Table of values

n a(n)
1 4
2 36
3 4634
4 1608968
5 3856183182
6 40522780697742
7 2345237392530015812
8 681081741849413830473468
9 1012037226170162671485394009190

List of values

[4, 36, 4634, 1608968, 3856183182, 40522780697742, 2345237392530015812, 681081741849413830473468, 1012037226170162671485394009190]

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

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